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A riqueza de espécies arbóreas na floresta atlântica de encosta no estado de São Paulo (Brasil) Rev. Bras. Bot.
TABARELLI,MARCELO; MANTOVANI,WALDIR.
Extensa literatura refere-se à floresta atlântica de encosta no estado de São Paulo como possuidora de elevada diversidade florística. Esta afirmação está baseada em dados e conclusões de estudos florísticos e fitossociológicos locais. A maioria destes trabalhos não define com clareza o que considera diversidade, de que grupos estão tratando, a escala de abordagem e, principalmente, quais as florestas usadas para comparação. Neste estudo, são comparados dados sobre riqueza de plantas arbóreas (<FONT FACE="Symbol">³</font> 2,5 cm dap) na floresta atlântica de encosta em São Paulo com os de outras florestas neotropicais. Posteriormente, são discutidas as principais relações conhecidas entre a riqueza de plantas lenhosas nas florestas neotropicais...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Atlantic rain forest; Species richness; Woody plants; Floristic composition.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041999000200012
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Abiotic gradients drive floristic composition and structure of plant communities in the Monte Desert RChHN
ACEBES,PABLO; TRABA,JUAN; PECO,BEGOÑA; REUS,MARÍA L; GIANNONI,STELLA M; MALO,JUAN E.
Defining plant communities in desert zones is difficult due to large scale homogeneity and small scale heterogeneity, thus making provision of systematic information for conservation decisions problematic. We analysed plant communities of the most arid sector of Monte Desert for structure, plant composition and environmental variables. Small-scale variables such as slope, rock cover, bare ground and litter, as well as large-scale ones such as species diversity, composition and similarity within and between sites were included. Analyses of floristic composition showed the difficulty of segregating distinct communities due to high internal heterogeneity and overlap between the different sites. Only mesquite woodlands, a community situated at the extreme of...
Tipo: Journal article Palavras-chave: Arid environment; Heterogeneity; Shrubland; Similarity; Species richness.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2010000300007
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AMBIENTES MARINOS DE LA PLATAFORMA SOMERA DE LA GUAJIRA, CARIBE COLOMBIANO* Boletín de Investigaciones
Chasqui,Luis; Nieto,Ramón; Rodríguez-Rincón,Angélica; Gil-Agudelo,Diego L.
A brief description of seven benthic environments found in La Guajira's shallow continental shelf from Boca de Camarones to Cabo de la Vela between 3 to 20 m depth is presented. Cover percentage of main benthic components, organic matter proportion in sediment, and main organisms observed in each environment are listed. The dominant environment was "arenal" (sandy bottom) covering 47% of total area sampled, whereas most species were observed in the environments "fondo mixto" (mixed bottom), "cascajo compuesto" (composed gravel) and "corales y esponjas sobre cascajo" (corals and sponges on gravel).
Tipo: Journal article Palavras-chave: La Guajira; Shallow continental platform; Benthic environments; Species richness.
Ano: 2013 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000200011
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An updated analysis of the distribution of cites-listed peruvian carnivores for conservation priorities Mastozool. neotrop.
Hurtado,Cindy M; Pacheco,Víctor; Fajardo,Úrsula; Uturunco,Angie.
Species in the Order Carnivora are susceptible to habitat fragmentation, deforestation, and climate change because of their medium to large size, large spatial requirements, and other species-specific require­ments, providing challenges to conservation and management. Understanding their distributions and occurrence in the face of these threats is crucial for conservation. Peru has 21 carnivore species regulated by the CITES Convention (61.8% of all Peruvian carnivore species). The aims of this project were: a) to generate distribution maps of Peruvian carnivores listed by CITES, b) to describe their distribution by ecoregions, c) to describe changes in species richness through time, and d) to identify species and areas in need of further research and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Information gaps; Mammals; Occurrence; Peru; Species richness; Mamíferos; Ocurrencia; Perú; Riqueza de especies; Vacíos de información.
Ano: 2016 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832016000200016
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Analysis of the contribution and efficiency of the Santuario de la Naturaleza Yerba Loca, 33º S in protecting the regional vascular plant flora (Metropolitan and Fifth regions of Chile) RChHN
ARROYO,MARY T. K; MARTICORENA,CLODOMIRO; MATTHEI,OSCAR; MUÑOZ,MÉLICA; PLISCOFF,PATRICIO.
Santuario de la Naturaleza Yerba Loca (SN Yerba Loca), Metropolitan Region (MR), 33º S, Chile is analyzed for its conservation value and efficiency in protecting native vascular plants in a regional context. The reserve's flora of 500 species and subtaxa was evaluated for species richness, endemism, range size and marginally distributed taxa, using species-area analysis, and tendencies in the floras of the MR (1.434 species and subtaxa) and MR-Fifth regions (1,841 species and subtaxa) to set the regional pattern. The reserve (0.7 % of MR land area and 0.3 % MR-Fifth land area) contains 34 % of the MR and 27% of the MR-Fifth floras, and around 16-17 % of the mediterranean-climate area (regions IV-VIII) flora of central Chile. Veech's Relative Richness Index...
Tipo: Journal article Palavras-chave: Conservation efficiency; Endemism; Hotspot; Protected area; Mediterranean flora; Species richness.
Ano: 2002 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2002000400012
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Assemblage of chiropterans in a remnant of semideciduous seasonal forest in southern Brazil and latitudinal patterns of species diversity in the Atlantic Forest Mastozool. neotrop.
de S. Pires,Daniel Paulo; Marques,Rosane V; Cabral,Tiago C; de Lima,Camila S; Cademartori,Cristina V.
Observed and expected richness, capture success, diversity, dominance, evenness and the effect of latitude on the above variables at the regional level were evaluated with regard to the chiropteran fauna of a semideciduous seasonal forest remnant in the state of Rio Grande do Sul, southern Brazil. Sampling occurred between July 2008 and June 2010 using mist nets erected at ground level. So that chiropteran fauna could be described and compared to other studies in the Atlantic Rainforest throughout the 10°-30°S using multivariate regression. One hundred and sixteen specimens were captured, comprising 9 species and 3 families: Phyllostomidae, Vespertilionidae and Molossidae. Capture success was 0.0008 ind/m²h, with a diversity index (H&#8217;) of 1.623;...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Abundance; Atlantic Forest; Bats; Species richness.
Ano: 2014 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832014000200007
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Bat assemblage of Guaribas Biological Reserve, an Atlantic forest conservation unit in North-eastern Brazil: Results of a two-stage long-term survey Biological Sciences
Zeppelini, Caio Graco; Jerônimo, Isabela; Rego, Karlla Morganna da Costa; Fracasso, Maria Paula de Aguiar; Lopez, Luiz Carlos Serramo.
Inventories are the basis of every work with biodiversity, with increased importance due to the current environmental crisis. Bats are one of the most diverse groups of mammals, with high ecologic versatility and are good bioindicators to monitor environmental impacts. We performed a two-stage survey at an Atlantic Forest reserve in the State of Paraíba, the first stage registering 187 individuals of 24 species and the second stage, 1073 individuals of 11 species; the second stage’s richness being a subset of the first as pointed by the Mann-Whitney test. The second stage was more efficient in accumulating individuals, while the first accumulated species more efficiently. The diversity estimation (Chao 1) pointed that the survey was efficient in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 2.01.00.00-0; 2.04.00.00-4; 2.04.05.00-6 Chiroptera; Inventory; Diversity estimation; Species richness; Natalus stramineus taxonomia dos grupos recentes.
Ano: 2016 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/31248
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Biodiversity, Urban Areas, and Agriculture: Locating Priority Ecoregions for Conservation Ecology and Society
Ricketts, Taylor; World Wildlife Fund; taylor.ricketts@wwfus.org; Imhoff, Marc; NASA's Goddard Space Flight Center; mimhoff@LTPmail.gsfc.nasa.gov.
Urbanization and agriculture are two of the most important threats to biodiversity worldwide. The intensities of these land-use phenomena, however, as well as levels of biodiversity itself, differ widely among regions. Thus, there is a need to develop a quick but rigorous method of identifying where high levels of human threats and biodiversity coincide. These areas are clear priorities for biodiversity conservation. In this study, we combine distribution data for eight major plant and animal taxa (comprising over 20,000 species) with remotely sensed measures of urban and agricultural land use to assess conservation priorities among 76 terrestrial ecoregions in North America. We combine the species data into overall indices of richness and endemism. We...
Tipo: Peer-Reviewed Reports Palavras-chave: North America; Agriculture; Biodiversity; Conservation; Conservation priorities; Ecoregions; Endemism; Human land use; Species richness; Threats to biodiversity; Urbanization.
Ano: 2003
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Butterfly Species Richness Patterns in Canada: Energy, Heterogeneity, and the Potential Consequences of Climate Change Ecology and Society
Kerr, Jeremy T; University of Oxford; Jeremy.Kerr@CCRS.NRCan.gc.ca.
The distributions of most pollinator species are poorly documented despite their importance in providing ecosystem services. While these and other organisms are threatened by many aspects of the human enterprise, anthropogenic climate change is potentially the most severe threat to pollinator biodiversity. Mounting evidence demonstrates that there have already been biotic responses to the relatively small climate changes that have occurred this century. These include wholesale shifts of relatively well-documented butterfly and bird species in Europe and North America. Although studies of such phenomena are supported by circumstantial evidence, their findings are also consistent with predictions derived from current models of spatial patterns of species...
Tipo: Peer-Reviewed Reports Palavras-chave: Butterflies; Climate change; Habitat heterogeneity; Land cover; Latitudinal gradients; Pollinator; Species richness; Species richness-energy theory.
Ano: 2001
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Community composition and species richness of parasitoids infesting Yponomeuta species in the Netherlands Naturalis
Cleary, Daniel F.R..
Parasitoid assemblages infesting Yponomeuta species in the Netherlands were investigated. Parasitoid species richness and community composition were related to host species, habitat, temporal and spatial variation. Both community structure and species richness did not differ among habitats. There was no significant difference in species richness between years (1994 and 1995) but there was a significant difference in community composition. Community composition and species richness both differed among host species, although this latter result was solely due to the host species Y. evonymellus. There was no significant relationship between community similarity and distance. These results indicate that the parasitoids of the moth genus Yponomeuta in the...
Tipo: Article / Letter to the editor Palavras-chave: ANOSIM; Beta diversity; Community composition; Distance; Species richness.
Ano: 2004 URL: http://www.repository.naturalis.nl/record/534398
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Contribution to a synopsis of marine species richness in the Pertuis Charentais Sea with new insights in soft-bottom macrofauna of the Marennes-Oleron Bay ArchiMer
De Montaudouin, Xavier; Sauriau, Pierre-guy; De Montaudouin, Xavier; Sauriau, Pierre-guy.
The catalogue of soft-bottom macrofauna in the Marennes-Oleron Bay (French Atlantic coast) has been updated from a benthic survey conducted in April-May 1995. 262 stations were selected using a stratified random strategy based on sediment types and bathymetric levels. 231 soft-bottom macrofauna species were identified. A synopsis of all available literature since the first local marine study published in 1710 by Antoine Ferchauld de Reaumur indicated that 60 benthic species were reported in the Marennes-Oleron Bay for the first time. The sampling effort, i.e. more than 1 station per km(2) and size of the sieving square mesh (1 mm), can partially explain these results. Most of the new recorded species were crustaceans (28 species) and polychaete annelids...
Tipo: Text Palavras-chave: Pertuis Charentais; Marennes Oleron Bay; Checklist; Species richness; Macrozoobenthos.
Ano: 2000 URL: https://archimer.ifremer.fr/doc/2000/publication-885.pdf
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Diversidad de la vegetación y características morfoedáficas de las riberas de arroyos pampeanos Ecología austral
Gantes,Patricia; Falco,Liliana; Sánchez Caro,Aníbal.
Las riberas son ecosistemas espacial y temporalmente heterogéneos que favorecen una alta diversidad, pero que se podrían ver afectadas por la intensificación de ciertas perturbaciones antrópicas. Con el propósito de aportar información de base, que permita evaluar los efectos sobre la biodiversidad de eventuales disturbios, se caracteriza la vegetación por sus grupos biológicos y se analizan tres aspectos: la diversidad a tres escalas (margen, tramo y cuenca), su relación con características topográficas y edáficas y los cambios asociados a la presencia de ganado. Se identificaron 130 taxa; entre ellas, Cynodon dactylon y Eleocharis spp. tuvieron una frecuencia cercana al 100% y fueron los de mayor cobertura. Se halló 51% de especies herbáceas perennes,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Riqueza específica; Grupos biológicos; Escalas espaciales; Species richness; Biological groups; Spatial scales.
Ano: 2017 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1667-782X2017000100010
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Diversidad vegetal en el sotobosque de plantaciones comerciales de Eucalyptus urophylla S. T. Blake Colegio de Postgraduados
Oros Nakamura, Dilhery.
La superficie de los bosques naturales en México se ha visto mermada debido a la gran demanda de productos maderables y a la falta de un adecuado manejo. El Gobierno Federal a través de la Comisión Nacional Forestal (CONAFOR) incentivó el establecimiento de plantaciones forestales comerciales tratando de revertir el deterioro y contribuir a satisfacer la demanda nacional de productos maderables. Sin embargo, existe un desconocimiento sobre el efecto positivo o negativo de los monocultivos en elecosistema, particularmente en la biodiversidad. Los objetivos de este trabajo fueron evaluar, analizar y comparar la diversidad vegetal del sotobosque en condiciones de plantación, de vegetación riparia y de pastizal, a través de la composición florística e...
Palavras-chave: Eucalyptus urophylla; Índice de diversidad; Riqueza de especies; Diversidad alfa y beta Eucalyptus urophylla; Diversity indicators; Species richness; Alpha and beta diversity.
Ano: 2012 URL: http://hdl.handle.net/10521/866
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Diversidad vegetal en el sotobosque de plantaciones comerciales de Eucalyptus urophylla S. T. Blake Colegio de Postgraduados
Oros Nakamura, Dilhery.
La superficie de los bosques naturales en México se ha visto mermada debido a la gran demanda de productos maderables y a la falta de un adecuado manejo. El Gobierno Federal a través de la Comisión Nacional Forestal (CONAFOR) incentivó el establecimiento de plantaciones forestales comerciales tratando de revertir el deterioro y contribuir a satisfacer la demanda nacional de productos maderables. Sin embargo, existe un desconocimiento sobre el efecto positivo o negativo de los monocultivos en elecosistema, particularmente en la biodiversidad. Los objetivos de este trabajo fueron evaluar, analizar y comparar la diversidad vegetal del sotobosque en condiciones de plantación, de vegetación riparia y de pastizal, a través de la composición florística e...
Tipo: Tesis Palavras-chave: Eucalyptus urophylla; Indice de diversidad; Riqueza de especies; Diversidad alfa y beta; Diversity indicators; Species richness; Aalpha and beta diversity.
Ano: 2008 URL: http://hdl.handle.net/10521/1193
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Diversidad vegetal en el sotobosque de plantaciones comerciales de Eucalyptus urophylla S. T. Blake Colegio de Postgraduados
Oros Nakamura, Dilhery.
La superficie de los bosques naturales en México se ha visto mermada debido a la gran demanda de productos maderables y a la falta de un adecuado manejo. El Gobierno Federal a través de la Comisión Nacional Forestal (CONAFOR) incentivó el establecimiento de plantaciones forestales comerciales tratando de revertir el deterioro y contribuir a satisfacer la demanda nacional de productos maderables. Sin embargo, existe un desconocimiento sobre el efecto positivo o negativo de los monocultivos en elecosistema, particularmente en la biodiversidad. Los objetivos de este trabajo fueron evaluar, analizar y comparar la diversidad vegetal del sotobosque en condiciones de plantación, de vegetación riparia y de pastizal, a través de la composición florística e...
Palavras-chave: Eucalyptus urophylla; Índice de diversidad; Riqueza de especies; Diversidad alfa y beta Eucalyptus urophylla; Diversity indicators; Species richness; Alpha and beta diversity.
Ano: 2012 URL: http://hdl.handle.net/10521/851
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Dynamics of exopolymeric carbon pools in relation with phytoplankton succession along the salinity gradient of a temperate estuary (France) ArchiMer
Morelle, Jerome; Schapira, Mathilde; Francoise, Sylvaine; Courtay, Gaelle; Orvain, Francis; Claquin, Pascal.
In parallel to phytoplankton community dynamics, transparent exopolymeric particles (TEP) and exopolymeric substances (EPS) were investigated along the salinity gradient of a temperate estuary (Seine estuary, Normandy, France) over the course of a year. The phytoplankton community was mainly dominated by marine diatom species (especially Skeletonema sp., Nitzschia sp., and Paralia sulcata) associated with a spring bloom of pico-eukaryotes and the development of Cryptophyceae in summer. The decreases in species richness and salinity were correlated along the estuary and a significant exponential relationship between species richness and primary production was identified. Concentrations of TEP and EPS (soluble and bound carbohydrates) are highly dynamic in...
Tipo: Text Palavras-chave: Picophytoplankton; Nanophytoplankton; Exopolymeric substances; Species richness.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00440/55189/56645.pdf
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Effects of Roads on Animal Abundance: an Empirical Review and Synthesis Ecology and Society
Fahrig, Lenore; Carleton University, Geomatics and Landscape Ecology Laboratory, Department of Biology; lfahrig@ccs.carleton.ca; Rytwinski, Trina; Carleton University, Geomatics and Landscape Ecology Laboratory, Department of Biology; trytwins@connect.carleton.ca.
We attempted a complete review of the empirical literature on effects of roads and traffic on animal abundance and distribution. We found 79 studies, with results for 131 species and 30 species groups. Overall, the number of documented negative effects of roads on animal abundance outnumbered the number of positive effects by a factor of 5; 114 responses were negative, 22 were positive, and 56 showed no effect. Amphibians and reptiles tended to show negative effects. Birds showed mainly negative or no effects, with a few positive effects for some small birds and for vultures. Small mammals generally showed either positive effects or no effect, mid-sized mammals showed either negative effects or no effect, and large mammals showed predominantly negative...
Tipo: Peer-Reviewed Synthesis Palavras-chave: Environmental impact; Landscape connectivity; Mortality; Population density; Road network; Road density; Road effect zone; Road mitigation; Species distribution; Species richness; Traffic density; Traffic volume.
Ano: 2009
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Estimating the snake species richness of the Santubong Peninsula (Borneo) in two different ways Naturalis
Rooijen, J. van.
The distribution of Borneo’s species across the island is far from well-known. This is particularly true for snakes which are hard to find. Given the current rate of habitat destruction and consequent need for conservation strategies, more information is required as to the species composition and richness of specific areas of potential conservation priority. An example is the Santubong Peninsula, Sarawak, Malaysia, part of which has recently been gazetted as a National Park. In this paper, the snake species richness of the Santubong Peninsula is estimated on the basis of data obtained during 450 survey-hours. Thirty-two species were recorded. Negative exponential and Weibull functions were fitted to the rarefaction curve. The Weibull function exhibited a...
Tipo: Article / Letter to the editor Palavras-chave: Chao I estimator; Negative exponential function; Rarefaction curve; Santubong Peninsula Borneo; Snakes; Species richness; Weibull function; 42.82.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/320292
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FAUNA NOCTURNA ASOCIADA A LOS MANGLARES Y OTROS HUMEDALES EN LA VÍA PARQUE ISLA DE SALAMANCA, DEPARTAMENTO DEL MAGDALENA, CARIBE COLOMBIANO Boletín de Investigaciones
Balaguera-Reina,Sergio A.; González-Maya,José F.; Acero P.,Arturo.
This note reports the faunal species associated with mangroves and other wetlands in nocturnal periods in the Vía Parque Isla de Salamanca in order to support management and conservation planning for this natural park. The study was carried out from September through December 2006 using nocturnal surveys. We report 19 species including invertebrates such as arachnids, crustaceans, and mollusks, and vertebrates such as amphibians, reptiles, birds, and mammals. We focused on those species that are classified as threatened either nationally or internationally, and those for which VIPIS represents an information need and an important area for ensuring their persistence.
Tipo: Journal article Palavras-chave: Nocturnal activity; Fauna; Species richness; Mangroves; Vía Parque Isla de Salamanca.
Ano: 2010 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612010000100011
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Faunal changes and geographic crypticism indicate the occurrence of a biogeographic transition zone along the southern East Pacific Rise ArchiMer
Matabos, M.; Plouviez, S.; Hourdez, S.; Desbruyeres, Daniel; Legendre, P.; Waren, A.; Jollivet, D.; Thiebaut, E..
Aim Deep-sea hydrothermal vents have now been reported along all active mid-ocean ridges and back-arc basins, but the boundaries of biogeographic entities remain questionable owing to methodological issues. Here we examine biogeographic patterns of the vent fauna along the East Pacific Rise (EPR) and determine the relative roles of regional and local factors on the distribution of biodiversity associated with mussel beds along a poorly explored zone, the southern EPR (SEPR). Location East Pacific Rise. Methods A species list of macrobenthic invertebrates along the EPR was compiled from the literature and supplemented with data recovered during the French research cruise BIOSPEEDO carried out in 2004 along the SEPR. Biogeographic patterns were assessed by...
Tipo: Text Palavras-chave: Biogeographic patterns; Community structure; East Pacific Rise; Hydrothermal vents; Marine biodiversity; Molecular systematics; Mussel beds; Species richness.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00033/14395/11767.pdf
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