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A confirmation method for the presence of the Siberian flying squirrel via feces OAK
嶌本, 樹; 古川, 竜司; 鈴木, 圭; 柳川, 久; YANAGAWA, Hisashi.
タイリクモモンガPteromys volansは,フィンランドやエストニア,韓国などでは森林分断化の影響による個体数の減少が危惧されている.北海道の十勝地方においても,過去の森林分断化によって生息地が減少した上に,現在でもさらに生息地の分断化・減少が進行している.本種に対する森林分断化の影響を評価するには,生息確認方法を確立し,生息状況をモニタリングする必要がある.本研究では,糞による簡便かつ効率的な生息確認方法を確立するために,糞が頻繁に発見される場所の特徴や糞の発見効率を検討した.11ヶ所の樹林地(面積0.42–13.69 ha)において,それぞれ10 mの調査ラインをランダムに12本引き,両側4 m(片側2 m)の範囲で糞の有無を確認した.全ての樹林地で本種の糞が発見され,1ヶ所の樹林地あたりの発見糞塊数は平均9.7個,発見ライン数は平均6.2本であった.糞は胸高直径が太い樹木の近くでよく発見され,胸高直径24 cm以上の樹木から20 cm以内の範囲で糞を探すことが効率的であることがわかった.一方で,樹林面積は糞の発見ライン数に影響しなかった.そのため,樹林面積の大きさによって,調査努力量を変える必要はないと考えられた.本調査の結果から,面積に関わらず1ヶ所の樹林地につき5本程度のラインを引いて糞を探すことで,簡便かつ効率的に本種の生息を確認できることがわかった.
Palavras-chave: Feces; Forest fragmentation; Pteromys volans; Siberian flying squirrel.
Ano: 2014 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4114
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Abiotic alterations caused by forest fragmentation affect tree regeneration: a shade and drought tolerance gradient in the remnants of Coastal Maulino Forest RChHN
GUERRERO,PABLO C; BUSTAMANTE,RAMIRO O.
Plant regeneration is strongly determined by light and soil moisture differences between habitáis; both variables are modified by large-scale forest fragmentation. Several studies have indicated this alteration as the mechanism involved in tropical forest community change. The effects of fragmentation may be much more severe in Mediterranean and deciduous forests, because plant species in these forests show a stress tolerance tradeoff between shade and drought. Our study was performed in the deciduous fragmented Coastal Maulino Forest: Reserva Nacional Los Queules (RNLQ) and surrounding small fragments. We hypothesised that Aristotelia chilensis (shade intolerant but drought tolerant) should increase its regeneration in small patches as a consequence of...
Tipo: Journal article Palavras-chave: Ecological restoration; Forest fragmentation; Safe sites; Seed germination; Seedling establishment.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2009000300008
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Activity patterns of frugivorous phyllostomid bats in an urban fragment in southwest Amazonia, Brazil Iheringia, Sér. Zool.
Verde,Rair S.; Silva,Richarlly C.; Calouro,Armando M..
ABSTRACT: The habitat fragmentation modifies the pattern of animal activity. This study aimed to determine the activity pattern of frugivorous bat species in an urban forest fragment in southwestern Amazonia. The study was conducted from August 2013 to September 2014 with 10 mist nets (9m x 2.5m), opened at ground level throughout all the night and totaling 64,800 m².hour/net. Two hundred and sixty-one captures of bats from 28 species were recorded. The period with the highest capture rate and species of bats was the first period of the night (until 00:00). The species with the highest incidence of catches were, in ascending order, Carollia brevicauda (Schinz, 1821), Carollia perpicillata (Linnaeus, 1758), Artibeus planirostris (Spix, 1823), and Artibeus...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon forest; Forest fragmentation; Fruit-eating; Pattern hourly activity; Phyllostomidae.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212018000100216
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Avifauna from a campus of Universidade Estadual do Centro-Oeste, Guarapuava, Paraná State, Brazil - doi: 10.4025/actascibiolsci.v33i2.7710 Biological Sciences
Vogel, Huilquer Francisco; Universidade Estadual do Centro-Oeste; Metri, Rafael; Universidade Estadual de Maringá; Zawadzki, Claudio Henrique; Universidade Estadual de Maringa; Moura, Maurício Osvaldo; Universidade Estadula do Centro-Oeste.
This study examined the structure and species richness of the avifauna in CEDETEG campus of Universidade Estadual do Centro-Oeste (Unicentro), in the urban area of Guarapuava, at Paraná State. Data were monthly taken from July 2006 to June 2007 using transects. A total of 125 bird species belonging to 42 families and 16 orders was recorded. The absence of large frugivorous species reveals the destabilization of native vegetation, evidencing that the current floristic structure does not support more specialized species. However, from the total amount of registered birds, 47 (38%) are related to the forest environment in the study area and 25 species (20%) are exclusive of this environment, pointing out the strong relevance of this campus for the...
Tipo: Composição de espécies Palavras-chave: 2.05.00.00-9 Avifauna; Forest fragmentation; Ombrophilous mixed forest Ecologia Avifauna; Forest fragmentation; Ombrophilous mixed forest.
Ano: 2011 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/7710
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Avifauna on small farms aiming forest management in Fernandes Pinheiro city, Parana State, Brazil PFB - Pesquisa Florestal Brasileira
Marcelino, Vânia Rossetto; Martins, Kelly Geronazzo; Figueiredo Filho, Afonso.
This work aimed to carry out a first diagnosis of local birds, concentrating in six fragments of Ombrophyllous Mixed Forest, using methods adequate to be repeated in subsequent periods. The assessment of birds on long-term may be used as local bio-indicator, especially because these areas will be managed in the future. In the sampledarea it was registered 124 species from 41 families. Four species listed in the Red Book of Threatened Fauna in the State of Paraná were recorded: Polioptila lactea (Creamy-bellied Gnatcatcher), Mesembrinibis cayennensis (Green Ibis), Accipiter superciliosus (Tiny Hawk) and Leptasthenura striolata (Striolated Tit-Spinetail). When the six forest fragments were assessed using the irregular transects method, it was registered 102...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ombrophyllous Mixed Forest; Forest fragmentation; Bioindicator; Tree community; Birds Recursos Florestais; Engenharia Florestal; Conservação da Natureza Floresta Ombrófila Mista; Fragmentação florestal; Bioindicador; Comunidade arbórea; Aves.
Ano: 2014 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/542
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Biologia de Centris Fabricius (Hymenoptera, Anthophoridae, Centridini) em matas contínuas e fragmentos na Amazônia Central Zoologia
Morato,Elder F.; Garcia,Marcos V. B.; Campos,Lúcio Antônio de O..
A study of four tree-hole nesting bee species of Centris Fabricius, 1804 was conducted between July, 1988 and June, 1990 in isolated and continuous "terra firme" forests at Manaus region. Nests were obtained from wood trap-nests of different diameters and consisted of a linear series of brood cells. Centris dichrootricha (Moure, 1945) and C. terminata Smith, 1874 were the most abundant species. Centris terminata nested principally in gaps and continuous forest and C. dichrootricha in cleared areas and small fragments of forest. More nests were obtained in trap-nests placed at 8 and 15 m height above ground. Nesting activity was more pronounced in the wet season between August and January. Natural enemies are the beetle Tetraonyx Latreille, 1805 and the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Anthophoridae; Centris; Amazonia; Forest fragmentation; Bee biology.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000400029
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Composição e dinâmica da avifauna da mata de Santa Genebra, Campinas, São Paulo, Brasil Zoologia
Aleixo,Alexandre; Vielliard,Jacques M.E..
A quali-quantitative survey of avifauna was earried out at the Santa Genebra forest reserve (MSG) in order to evaluate the current state of conservation of this important conservation area in the interior of São Paulo Stale. The qualilative survey recorded 134 species and the quantitativo survey through unlimited distance point counts recorded the abundance of 97 species. The low number of species recorded in both surveys was due to the small size (251 ha) and the high degree of isolation of the MSG. These factors plus the extensivo degradation of the forest cover prevent recolonization of extinct species and allow the expansion of some species tolerant to disturbance. The quantitative survey showed some species with an unusually high abundance index. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bird community; Unlimited distance point counts; Forest fragmentation; Density compensation.
Ano: 1995 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751995000300004
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Conservation of the endemic Javan hawk-eagle Spizaetus bartelsi Stresemann, 1924 (Aves: Falconiformes): density, age-structure and population numbers Naturalis
Balen, S. (Bas) van; Nijman, Vincent; Sözer, Resit.
The endemic Javan hawk-eagle Spizaetus bartelsi is considered threatened with extinction because of its small population size and fragmentation of its habitat on the densely populated island of Java, Indonesia. Like many other tropical forest raptors little is known about many of its population parameters. Research was carried out from 1980 to 2000 in order to assess the status of this species. Its presence was confirmed throughout the island in both wet and dry climatic zones. Home range sizes were calculated to range between 12-36 km², and comparison with published estimates suggests that these may differ significantly between areas. Encounter rates are in the order of 0.1-0.9 birds per survey day, and were significantly higher in areas with a short dry...
Tipo: Article / Letter to the editor Palavras-chave: Birds-of-prey; Raptor; Forest fragmentation; Java; Indonesia.
Ano: 2001 URL: http://www.repository.naturalis.nl/record/534326
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Corredores ecológicos como ferramenta para a desfragmentação de florestas tropicais PFB - Pesquisa Florestal Brasileira
Seoane, Carlos Eduardo Sícoli; Diaz, Vinícius Sandri; Santos, Tomaz Longhi; Froufe, Luís Claudio Maranhão.
A expansão do uso e ocupação antrópica do espaço terrestre leva a uma severa fragmentação dos habitats naturais. Corredores ecológicos podem facilitar o deslocamento de organismos entre fragmentos de habitats e têm sido cada vez mais adotados como uma ferramenta para manter e restaurar a biodiversidade. A teoria da metapopulação é uma das bases para os atuais estudos sobre corredores ecológicos. Esses estudos ainda estão pouco desenvolvidos, especialmente em ecossistemas tropicais, carecendo de bases científicas sólidas para apoiar a sua utilidade. No entanto, os efeitos da fragmentação florestal são tão severos que é justificável o planejamento e a execução de medidas que busquem atenuá-las, apesar de não estarem disponíveis resultados de pesquisas que...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Corredores ecológicos; Fragmentação florestal; Monitoramento; Permeabilidade da paisagem Biological corridors; Forest fragmentation; Monitoring; Landscape permeability.
Ano: 2010 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/158
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Decadal persistence of frugivorous birds in tropical forest fragments of northern Paraná Biota Neotropica
Zaiden,Tiago; Marques,Fernanda Cristina; Medeiros,Hugo Reis; Anjos,Luiz dos.
Forest fragmentation is a major cause of loss of species. We evaluated the local extinction of medium-large frugivorous bird species in six forest fragments of northern Paraná: the Parque Estadual Mata dos Godoy (PEMG), the largest and most preserved forest fragment in the region, and five other fragments. Fixed-width point counts and line transects were conducted along trails in the PEMG for 10 days: from September 2010 to March 2011, and from August 2011 to November 2011. Avian surveys in each of the other forest fragments were made over four days from October to December 2011. We compared data with a previous census carried out 10 years earlier. No extinction events were recorded from the PEMG. However, the relative abundance of species significantly...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Forest fragmentation; Large frugivorous birds; Extinction debit.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000200107
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Denied density-dependent seedling recruitment in a fragmented forest does not decrease seedling diversity RChHN
VALDIVIA,CARLOS E; SIMONETTI,JAVIER A.
Negative density-dependent relationships in plant communities are currently claimed as an important mechanism for the maintenance of plant diversity. However, anthropogenic perturbations such as forest fragmentation might modify such relationships. We evaluated density-dependent relationships between seed and seedling abundance of a tree assemblage in a fragmented forest for estimating seed-to-seedling transitions and their effects on seedling richness. In continuous forest, two out of four and one out of four species presented significant or a tendency to exhibit negative seedling recruitment which is in agreement with other temperate and tropical forests. In forest fragments (1-6 ha), however, this relationship was uncoupled. Seedling richness and...
Tipo: Journal article Palavras-chave: Density-dependent recruitment; Diversity; Forest fragmentation; Seedlings; Seeds.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2011000200012
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Diet and prey availability of terrestrial insectivorous birds prone to extinction in amazonian forest fragments BABT
Mestre,Luiz Augusto Macedo; Cohn-Haft,Mario; Dias,Manoel Martins.
This study compared niche breath, prey size, and diet variability in two pairs of sympatric species of terrestrial insectivorous birds, each pair containing one species that can persist in small forest fragments and one that does not. The pairs were Myrmeciza ferruginea and Sclerurus rufigularis; and Formicarius colma and F. analis, respectively. The prey availability in forest fragments was also sampled and compared to the availability in continuous forests. Niche breath indices did not differ between pair members, but diet variability differed in the opposite direction from that hypothesized. Although the two bird species most vulnerable to fragmentation fed on larger prey than less vulnerable species, prey availability, including that based on prey size...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazonian forests; Bird diet; Forest fragmentation; Insectivores; Formicarius colma; Formicarius analis; Myrmeciza ferruginea; Sclerurus rufigularis.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000600014
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Distribution and Causes of Global Forest Fragmentation Ecology and Society
Wade, Timothy G; U.S. Environmental Protection Agency, National Exposure Research Laboratory; wade.timothy@epa.gov; Riitters, Kurt; U.S. Forest Service; kriitters@fs.fed.us; Wickham, James D; U.S. Environmental Protection Agency, National Exposure Research Laboratory; wickham.james@epa.gov; Jones, K. Bruce; U.S. Environmental Protection Agency, National Exposure Research Laboratory; jones.bruce@epa.gov.
Because human land uses tend to expand over time, forests that share a high proportion of their borders with anthropogenic uses are at higher risk of further degradation than forests that share a high proportion of their borders with non-forest, natural land cover (e.g., wetland). Using 1-km advanced very high resolution radiometer (AVHRR) satellite-based land cover, we present a method to separate forest fragmentation into natural and anthropogenic components, and report results for all inhabited continents summarized by World Wildlife Fund biomes. Globally, over half of the temperate broadleaf and mixed forest biome and nearly one quarter of the tropical rainforest biome have been fragmented or removed by humans, as opposed to only 4% of the boreal...
Tipo: Peer-Reviewed Reports Palavras-chave: Forest fragmentation; Forest pattern; Global; Risk assessment; Targeting.
Ano: 2003
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Edaphic arthropods in different successional stages of Atlantic forest and abandoned. Repositório Alice
FERREIRA, C. dos R.; SOUZA, R. C. de; CORREIA, M. E. F.; RESENDE, A. S. de; ANJOS, L. H. C. dos; PEREIRA, M. G..
The vegetation may modifies the structure and composition of the community of edaphic arthropods. This study aimed to compare the community of edaphic arthropods in four areas of abandoned pasture (AP1, AP2, AP3, AP4) and four secondary native forest fragments in a successional gradient (FF1, FF2, FF3, FF4), in Itaboraí, Rio de Janeiro, Brazil. The areas are positioned on the hillside and the sampling was conducted in transects outlined in a toposequence (upper, middle and lower sections), where pitfall traps were installed in the dry season. The organisms were identified in taxonomic groups (class, order and family). Comparing the averages for AP and FF, there was no defined pattern in terms of the response of structural attributes (total abundance,...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Bioindicator; Forest fragmentation; Forest regeneration.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1087233
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Edge effect on vascular epiphytic composition in a fragment of Atlantic Forest in northeastern Brazil Acta Botanica
Dias-Terceiro,Randolpho Gonçalves; Peixoto,Gabriela Marques; Gomes,Vitor Serrano; Menezes,Marcelo Costa; Neco,Eudécio Carvalho; Pessoa,Tainá Sherlakyann Alves; Fabricante,Juliano Ricardo; Albuquerque,Manoel Bandeira.
Epiphytes are common in the canopy of temperate and tropical forests, where they substantially contribute to species diversity and to key ecosystem processes. However, little is known about the effects caused by deforestation on this group of species, especially in northeastern Brazil, an area experiencing intense anthropogenic pressure. This study aimed to evaluate the effect of environmental variables on the structure of assemblies of vascular epiphytes in a fragment of open ombrophilous forest, Areia, northeastern Brazil. Sixty 10 × 10 m sampling plots were installed to cover different environments within the fragment. The relationship between environmental variables and species composition was evaluated by means of a generalized linear mixed model. The...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Brejo de altitude; Community ecology; Epiphytism; Environmental factors; Forest fragmentation.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000200270
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Efeitos da fragmentação florestal sobre vespas e abelhas solitárias em uma área da Amazônia Central Zoologia
Morato,Elder F.; Campos,Lúcio Antônio de O..
The effects of forest fragmentation on tree-hole nesting solitary wasps and bees were investigated at a site 90 km north of Manaus, Brazil. Wasp and bee faunas were monitored in continuous terra firme forest, forest fragments of 1, 10 and 100 ha, natural gaps in continuous forest and deforested areas. These habitats were studied in terms of abundance, richness, diversity and similarity. The wasps and bees were monitored monthly during June 1988 through June 1990 by means of a trap-nests technique. A total of 1529 nests of wasps of 24 species and 405 nests of bees of 14 species were collected. The number of species of wasps and bees varied little among the habitats. The genus Trypoxylon Latreille, 1796 (Sphecidae) accounted for 79% of wasp nests and Centris...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazonia; Forest fragmentation; Solitary bees; Solitary wasps; Trap-nests.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752000000200014
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Efeitos da fragmentação florestal sobre vespas e abelhas solitárias na Amazônia Central. II. estratificação vertical Zoologia
Morato,Elder Ferreira.
The effects of forest fragmentation on the patterns of vertical abundance and richness of solitary wasp and bee communities was investigated near Manaus, Amazonas. Wasps and bees were trap-nested at 1,5, 8 and 15 m above the ground in continuous primary forestand isolated forest fragments. In general, the number of nests and species increased with height for both groups. In particular, bee species richness at 15 m was almost twice that at 1,5 mm. However, one species of Trypoxylon Latreille, 1796 (Sphecidae) consistently nested in the understorey. Thus, patterns of abundance and richness distributions indicated stratification. A contingency analysis showed that fragmentation altered stratification of nesting activity of the wasp community in fragments....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Forest fragmentation; Amazonia; Stratification; Solitary wasps; Solitary bees.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000300010
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Environmental degradation impact on native communities of arbuscular mycorrhizal fungi in an urban fragment of semideciduous plateau forest Acta Botanica
Carrenho,Rosilaine; Gomes-da-Costa,Sandra Maria.
Three forest reserves, with highly degraded areas, are open to visitors in Maringá, Paraná, Brazil. Impact caused by tree cutting, heavy traffic and visitors on the establishment of arbuscular mycorrhizal fungi (AMF) was evaluated in two areas with different degradation stages of the Dr. Luis Teixeira Mendes Forest Garden, a remnant of semideciduous forest. Soil samples were removed from three locations within each area; spores were isolated from the soil by wet sieving and sucrose centrifugation and mounted on permanent slides. Spores were counted and identified taxonomically under a microscope. Diversity, dominance, equitability and similarity indexes were calculated from abundance data. The degraded area had the highest number of spores and featured...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Diversity; Glomeromycetes; Forest fragmentation.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062011000200013
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Feeding habits of mosquitoes (Diptera: Culicidae) in an area of sylvatic transmission of yellow fever in the state of São Paulo, Brazil J. Venom. Anim. Toxins incl. Trop. Dis.
Mucci,Luis Filipe; Cardoso Júnior,Rubens Pinto; Paula,Marcia Bicudo de; Scandar,Sirle Abdo Salloum; Pacchioni,Márcio Lunardeli; Fernandes,Aristides; Consales,Cleide Aschenbrenner.
AbstractBackground The reintroduction of sylvatic yellow fever in the state of São Paulo after about six decades was confirmed in the Northwestern region in 2000, where in 2008 there also occurred an important epizootic. The purpose of this study was to investigate the feeding habits of culicids potentially involved in the sylvatic transmission of the virus in this region.Methods Specimens were collected in 24 forested localities at ground level with hand nets and mouth aspirators. Collections were made quarterly between October 2006 and July 2008 during daylight hours. Blood-meal identification was carried out in mosquitoes of the tribes Aedini, Mansoniini and Sabethini. The biotin/avidin sandwich ELISA was employed to determine six source types: bird,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Feeding habit; Sylvatic yellow fever; Neotropical mosquitoes; Non-human primate; Forest fragmentation.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992015000100316
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Fragment shape and size, landscape permeability and fragmentation level as predictors of primate occupancy in a region of Brazilian Cerrado Biological Sciences
Grande, Thallita Oliveira; Alencar, Raony Macedo; Ribeiro, Paulo Pinheiro; Melo, Fabiano Rodrigues.
Human activities result in the formation of a mosaic of forest patches within a non-habitat matrix. The response of the local biodiversity to changes in land-use may occur at different scales. It is important to evaluate the effects of the attributes of both the patches and the surrounding landscape on the occupancy of forest patches by animal populations. Here, we assessed the predictive potential of local (basal area, tree density), patch (size, shape) and landscape scale (total area of forest, number of patches, matrix permeability, patch proximity) variables on the occupancy of forest patches by the syntopic primates Alouatta caraya, Sapajus libidinosus and Callithrix penicillata in the city of Goiânia in the Cerrado region of central Brazil. We used...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Primate syntopy patch occupancy matrix forest fragmentation playback primate syntopy; Patch occupancy; Matrix; Forest fragmentation; Playback..
Ano: 2020 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/48339
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