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Palavra-chave Endemism (94) Taxonomy (17) Conservation (9) Biodiversity (8) Neotropical (7) Systematics (7) Atlantic Forest (5) Biogeography (5) Phylogeny (5) Ostariophysi (4) Amazon (3) Atlantic Rainforest (3) Cerrado (3) Distribution (3) Islands (3) Neotropical fish (3) New species (3) Saint Helena (3) South America (3) 42.94 (2) Mais... Tipo do documento Info:eu-repo/semantics/article (63) Article / Letter to the editor (18) Journal article (6) Text (2) Info:eu-repo/semantics/other (1) Info:eu-repo/semantics/report (1) Peer-Reviewed Reports (1) Mais... Ano 2021 (1) 2020 (1) 2019 (4) 2018 (7) 2017 (7) 2016 (11) 2015 (2) 2014 (7) 2013 (4) 2012 (4) 2011 (8) 2010 (10) 2009 (6) 2008 (4) 2007 (2) 2006 (2) 2005 (1) 2004 (2) 2003 (3) 2002 (1) Mais... País Brazil (61) Netherlands (18) Chile (6) Argentina (4) France (2) Mexico (2) Canada (1) Mais... Idioma Inglês (73) Espanhol (2) Francês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 94 Primeira ... 1 2 3 4 5 ... Última Distribución ecológica del subgénero Neodawsonia Backeb. del género Cephalocereus Pfeiff. (Cactaceae), en el Itsmo de Tehuantepec, México. Colegio de Postgraduados Bárcenas Argüello, María Luisa. Cephalocereus es un género monofilético, cuya distribución es alopátrica y está restringida a la Barranca de Metztitlán (C. senilis), al Valle de Tehuacán-Cuicatlán (C. columna-trajani) y a la cuenca del río Tehuantepec (subgénero Neodawsonia, C. apicicephalium, C. nizandensis, C. totolapensis). Se desconoce qué factores condicionan este patrón de distribución endémico. El objetivo de este trabajo fue el proponer una hipótesis que explique el endemismo de sus especies, a partir de relaciones específicas entre la fisiología de los oxalatos de calcio y las propiedades de las rocas y de los suelos en los que habitan. En cada población se tomaron muestras del material parental (roca) del suelo, se removió tejido vegetal y se recolectaron semillas; estas... Palavras-chave: Endemismo; Material Parental; Oxalato de calcio; Germinación; Filogenia; Endemism; Parent material; Calcium oxalate; Germination; Phylogeny; Doctorado; Botánica. Ano: 2011 URL: http://hdl.handle.net/10521/458 Distribución ecológica del subgénero Neodawsonia Backeb. del género Cephalocereus Pfeiff. (Cactaceae), en el Itsmo de Tehuantepec, México. Colegio de Postgraduados Bárcenas Argüello, María Luisa. Cephalocereus es un género monofilético, cuya distribución es alopátrica y está restringida a la Barranca de Metztitlán (C. senilis), al Valle de Tehuacán-Cuicatlán (C. columna-trajani) y a la cuenca del río Tehuantepec (subgénero Neodawsonia, C. apicicephalium, C. nizandensis, C. totolapensis). Se desconoce qué factores condicionan este patrón de distribución endémico. El objetivo de este trabajo fue el proponer una hipótesis que explique el endemismo de sus especies, a partir de relaciones específicas entre la fisiología de los oxalatos de calcio y las propiedades de las rocas y de los suelos en los que habitan. En cada población se tomaron muestras del material parental (roca) del suelo, se removió tejido vegetal y se recolectaron semillas; estas... Palavras-chave: Endemismo; Material Parental; Oxalato de calcio; Germinación; Filogenia; Endemism; Parent material; Calcium oxalate; Germination; Phylogeny; Doctorado; Botánica. Ano: 2011 URL: http://hdl.handle.net/10521/458 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 Rarity patterns and conservation priorities in Cactaceae species from the Southern Central Andes: a case study from the Calchaquíes Valleys, Salta, Argentina Ecología austral Godoy-Bürki,Ana C.; Aagesen,Lone; Sajama,Jesús M.; Bravo,Silvia; Alonso-Pedano,Mariana; Ortega-Baes,Pablo. In this study, 34 Cactaceae species from the Calchaquíes Valleys, Argentina, were studied to determine 1) species rarity level, 2) proportion of rare species among taxonomic and ecological groups and, 3) whether rareness is consistently distributed throughout the species geographical ranges. We used a model where rarity is defined by the geographic range and the local population size to define species rarity. Rareness was not concentrated in any particular taxonomic or ecological group of Cactaceae; however 28 species were rare at some level. In most species, rarity varied across the geographical range, only five species remained consistently rare in all the surveyed populations. Six species qualified as extremely rare, all from the Cactoideae subfamily,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Geographic range; Local abundance; Extinction risk; Endemism. Ano: 2016 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1667-782X2016000100007 Taxonomic revision of the genus Gamochaeta Wedd. (Gnaphalieae, Asteraceae) in Chile Gayana Botánica Freire,Susana E.; Salomón,Luciana; Bayón,Néstor D.; Baeza,Carlos M.; Muñoz-Schick,Mélica; Migoya,María A.. ABSTRACT Twenty four species of Gamochaeta (Gnaphalieae, Asteraceae), G. aliena, G. alpina, G. americana, G. andina, G. axillaris, G. chamissonis, G. depilata, G. deserticola, G. falcata, G. filaginea, G. humilis, G. longipedicellata, G. neuquensis, G. nivalis, G. oligantha, G. procumbens, G. ramosa, G. serpyllifolia, G. simplicicaulis, G. spiciformis, G. stachydifolia, G. subfalcata, G. valparadisea, and G. villarroelii, are formally monographed with morphological descriptions, illustrations, geographic distribution and habitat, distribution maps, phenology, lists of representative specimens examined, and a comprehensive identification key for every species. A new name Gamochaeta ramosa S.E. Freire, N. Bayón & C.M. Baeza for Gnaphalium ramosum Phil.... Tipo: Journal article Palavras-chave: Compositae; Endemism; Lectotypification; South America; Synonyms; Taxonomy. Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432016000200292 Evolutionary change in the germination niche between related species within Neoporteria clade (Cactaceae) is idiosyncratic to habitat type Gayana Botánica Guerrero,Pablo C.; Mardones,Daniela; Viveros,Nataly; Peña-Gómez,Francisco T.; Bustamante,Ramiro O.. ABSTRACT An appropriate germination response to environmental conditions is the first requirement for the establishment of a plant in a determined geographic area; therefore changes in the germination niche may be critical in configuring the current pattern of species distributions. Furthermore, the spread of many Neotropical groups to higher latitudes are constrained by the combination of cold and humid conditions. This raises the question whether evolutionary trends in germination niche are essential for the mechanism that allows the colonization of edge habitats characterized by humid and cold conditions. Here, we evaluated the variation of seed germination probabilities of two species of cacti (Neoporteria clade), closely related but endemic to... Tipo: Journal article Palavras-chave: Endemism; Ontogenetic niche; Biogeography; Mediterranean biome; Chile. Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432016000200177 EPIPHYTIC LICHENS OF CONGUILLÍO NATIONAL PARK, SOUTHERN CHILE Gayana Botánica Rubio,Cecilia; Saavedra,Marcelo; Cuéllar,Mauricio; Díaz,Rodrigo; Quilhot,Wanda. One hundred and thirty eight epiphytic lichen species in 40 genera, are recorded from Conguillio National Park (38°30'-38°50' S; 71°30'-71°55' W), with predominancy of typically southern South American species. Lichen diversity is high, about 9 % of the lichen mycobiota from Chile, due mainly to species of the genera Bunodophoron, Menegazzia, Nephroma,, Pannaria, Protousnea and Pseudocyphellaria. Levels of endemism are rather high (nearly 40 %); also austral and cosmopolitan species, about 19 % and 16 % respectively, are the most representative biogeographical elements in the Park. Tipo: Journal article Palavras-chave: Endemism; Epiphytes; Lichens; Phorophytes; Wild protected areas. Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432013000100008 Thaptomys Thomas 1915 (Rodentia, Sigmodontinae, Akodontini) with karyotypes 2n = 50, FN = 48, and 2n = 52, FN = 52: two monophyletic lineages recovered by molecular phylogeny Genet. Mol. Biol. Ventura,Karen; Silva,Maria José de Jesus; Yonenaga-Yassuda,Yatiyo. A novel karyotype with 2n = 50, FN = 48, was described for specimens of Thaptomys collected at Una, State of Bahia, Brazil, which are morphologically indistinguishable from Thaptomys nigrita, 2n = 52, FN = 52, found in other localities. It was hence proposed that the 2n = 50 karyotype could belong to a distinct species, cryptic of Thaptomys nigrita, once chromosomal rearrangements observed, along with the geographic distance, might represent a reproductive barrier between both forms. Phylogenetic analyses using maximum parsimony and maximum likelihood based on partial cytochrome b sequences with 1077 bp were performed, attempting to establish the relationships among the individuals with distinct karyotypes along the geographic distribution of the genus;... Tipo: Info:eu-repo/semantics/article Palavras-chave: Atlantic Rainforest; Cytochrome b; Endemism; Molecular phylogeny; Thaptomys. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000200010 Genetic diversity and structure of Atta robusta (Hymenoptera, Formicidae, Attini), an endangered species endemic to the restinga ecoregion Genet. Mol. Biol. Reis,Evelyze Pinheiro dos; Salomão,Tânia Maria Fernandes; Campos,Lucio Antonio de Oliveira; Tavares,Mara Garcia. The genetic diversity and structure of the ant Atta robusta were assessed by ISSR (inter-simple sequence repeats) in 72 colonies collected from 10 localities in the Brazilian states of Espírito Santo (48 colonies) and Rio de Janeiro (24 colonies). The ISSR pattern included 67 bands, 51 of them (76.1%) polymorphic. Analysis of molecular variance (AMOVA) revealed a high level (57.4%) of inter-population variation, which suggested a high degree of genetic structure that was confirmed by UPGMA (unweighted pair-group method using an arithmetic average) cluster analysis. The significant correlation between genetic and geographic distances (r = 0.64, p < 0.05) indicated isolation that reflected the distance between locations. Overall, the populations were... Tipo: Info:eu-repo/semantics/article Palavras-chave: Endemism; Endangered; ISSR; Population genetics; Restinga. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572014000400015 Diversité ichtyologique en Méditerranée : patrons, modélisation et projections dans un contexte de réchauffement global ArchiMer Ben Rais Lasram, Frida. Due to its semi-enclosed shape, to its high species richness and high endemism levels and to its invasiveness, the Mediterranean Sea is one of the most particular and critical ecosystems of the world. The Mediterranean has been intensively studied since the Antiquity, yet foundations underlying fish diversity patterns have been overlooked. In this study, as a first step, we studied fish diversity patterns in the Mediterranean and their determinants. Towards this objective, we built the first comprehensive database on the spatial distributions of the 619 Mediterranean fish species. We then carried out spatial analyses in order to assess the relative contribution of historical and geometric contingencies as well as environmental influences in shaping fish... Tipo: Text Palavras-chave: Niche modeling; Global warming; Climatic envelopes; Geometric constraints; Endemism; Exotic invasions; Mediterranean Sea; Modélisation des niches; Réchauffement global; Enveloppes climatiques; Contraintes géométriques; Endémisme; Invasions exotiques; Mer Méditerranée. Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/these-7407.pdf Comparative phylogeography of the western Indian Ocean reef fauna ArchiMer Borsa, Philippe; Durand, Jean-dominique; Chen, Wei-jen; Hubert, Nicolas; Muths, Delphine; Mou-tham, Gerard; Kulbicki, Michel. Assessing patterns of connectivity at the community and population levels is relevant to marine resource management and conservation. The present study reviews this issue with a focus on the western Indian Ocean (WIO) biogeographic province. This part of the Indian Ocean holds more species than expected from current models of global reef fish species richness. In this study, checklists of reef fish species were examined to determine levels of endemism in each of 10 biogeographic provinces of the Indian Ocean. Results showed that the number of endemic species was higher in the WIO than in any other region of the Indian Ocean. Endemic species from the WIO on the average had a larger body size than elsewhere in the tropical Indian Ocean. This suggests an... Tipo: Text Palavras-chave: Indo-West Pacific; Biogeographic province; Endemism; Reef fish; Mitochondrial DNA; Parsimony network. Ano: 2016 URL: http://archimer.ifremer.fr/doc/00288/39919/44195.pdf Collection records of Gyldenstolpia planaltensis (Avila-Pires, 1972) (Rodentia, Cricetidae) suggest the local extinction of the species Mastozool. neotrop. Bezerra,Alexandra M. R.. The genus Gyldenstolpia was recently described and includes two species, G. fronto and G. planaltensis, both very rare. Gyldenstolpia planaltensis had records in only two localities in the central-western Brazil and is endemic to the Cerrado biome. A new locality is added to G. planaltensis, extending its distribution, and was obtained from a specimen housed in a museum collection. Summarized data on the distribution, ecology and natural history of G. planaltensis denotes that this species can be already extinct or committed to extinction because of habitat conversion and habitat loss. Tipo: Info:eu-repo/semantics/article Palavras-chave: Cerrado; Conservation; Endemism. Ano: 2011 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832011000100010 New species of Maerua (Capparaceae) from Angola Naturalis Abreu, J.A.; Martins, E.S.; Catarino, L.. Genus Maerua has around 60 species represented on the African continent, of which three have been reported for Angola. Two new species of Maerua (Capparaceae) from Angola are here described. Both are closely similar to M. juncea subsp. juncea, being distinguished by floral traits such as the receptacle, androphore and gynophore (M. pintobastoae) or leaf traits such as venation, as well as size and shape of the ovary and disc shape (M. mendesii). A key for Maerua species occurring in Angola is provided, as well as a table summarizing and comparing the morphological characters for the new species and similar African species. With the description of these two new species, the genus Maerua comprises five species in Angola. Resumo O género Maerua tem cerca de... Tipo: Article / Letter to the editor Palavras-chave: Angola; Capparaceae; Endemism; Maerua; Southern Africa; Taxonomy. Ano: 2014 URL: http://www.repository.naturalis.nl/record/526215 Revision of the family Dipterocarpaceae in Angola Naturalis Catarino, L.; Martins, E.S.; Abreu, J.A.; Figueira, R.. The diversity of Dipterocarpaceae in Angola is updated to 24 taxa, two species of Marquesia and 22 species and subspecies of Monotes. A new species is described and four new records (three species and one subspecies) are added to the Flora of Angola. The new species, Monotes paivae, occurs in the province of Bié, central Angola. Its diagnostic characters are a persistent indumentum on the entire upper surface of leaves and a woollytomentose indumentum in the lower surface of adult leaves. A key to the species and the respective descriptions is presented. The species of Monotes endemic in the country are mapped and their conservation status is discussed. Tipo: Article / Letter to the editor Palavras-chave: Dipterocarpaceae; Endemism; Marquesia; Monotes; New species; Southern Africa; Taxonomy. Ano: 2012 URL: http://www.repository.naturalis.nl/record/525571 A new genus of nephtheid soft corals (Octocorallia: Alcyonacea: Nephtheidae) from the Indo-Pacific Naturalis Ofwegen, L.P. van. A new genus of nephtheid soft corals is described from the Indo-Pacific, 53 species are included, 34 of which are new to science: Chromonephthea aldersladei spec. nov., C. bayeri spec. nov., C. benayahui spec. nov., C. braziliensis spec. nov., C. brevis spec. nov., C. cairnsi spec. nov., C. cobourgensis spec. nov., C. egmondi spec. nov., C. exosis spec. nov., C. franseni spec. nov., C. frondosa spec. nov., C. fruticosa spec. nov., C. goudi spec. nov., C. grandis spec. nov., C. grasshoffispec. nov., C. hoeksemai spec. nov., C. hornerae spec. nov., C. imaharai spec. nov., C. imperfecta spec. nov., C. levis spec. nov., C. megasclera spec. nov., C. minor spec. nov., C. muironensis spec. nov., C. obscura spec. nov., C. ostrina spec. nov., C. palauensis spec.... Tipo: Article / Letter to the editor Palavras-chave: Cnidaria; Anthozoa; Octocorallia; Alcyonacea; Nephtheidae; Chromonephthea; New genus; New species; Indo-Pacific; Endemism; 42.79. Ano: 2005 URL: http://www.repository.naturalis.nl/record/210125 Cynometra cebuensis, a new species of Leguminosae (Caesalpinioidae) from the Philippines Naturalis Seidenschwarz, F.. A new species of Cynometra from the Tabunan forest on Cebu island in the Philippines is described. Tipo: Article / Letter to the editor Palavras-chave: Caesalpinioidae; Cebu; Cynometra cebuensis; Endemism; Leguminosae; Tabunan forest. Ano: 2013 URL: http://www.repository.naturalis.nl/record/526022 Depreissia decipiens, an enigmatic canopy spider from Borneo revisited (Araneae, Salticidae), with remarks on the distribution and diversity of canopy spiders in Sabah, Borneo Naturalis Deeleman-Reinhold, C.L.; Miller, J.; Floren, A.. Tipo: Article / Letter to the editor Palavras-chave: Jumping spiders; Canopy spiders; Taxonomy; Biodiversity; Ant-mimicking spiders; Wasp-mimicking; Mt. Kinabalu; Rainforest; Cocalodinae; Polistine wasps; Endemism. Ano: 2016 URL: http://www.repository.naturalis.nl/record/625350 The forests and related vegetation of Kwerba, on the Foja Foothills, Mamberamo, Papua (Indonesian New Guinea) Naturalis Heist, M. van; Sheil, D.; Rachman, I.; Gusbager, P.; Raweyai, C.O.; Yoteni, H.S.M.. We describe the vegetation of Kwerba, in the foothills of the Foja Mountains in the Mamberamo Basin of West Papua, Indonesia. Few surveys have been carried out in this remote area of Western New Guinea. Working in collaboration with local people we made 15 plots, 10 in primary forest, 3 in secondary forest and 2 in gardens. A total of 487 morpho-species were distinguished, of which 32 % (156) did not match any herbarium specimens or published reference. Tree densities (598 ± 136/ha) are similar to lowland forests elsewhere, but mean stem sizes (22 ± 1 cm dbh and 21 ± 2 m height for trees over 10 cm dbh) appear small. Numbers of tree species per plot (22 ± 4, of 40 stems recorded) are unremarkable, but levels of endemism are potentially high with many of... Tipo: Article / Letter to the editor Palavras-chave: Biogeography; Botanical collection; Endemism; Undescribed taxa; Wilderness. Ano: 2010 URL: http://www.repository.naturalis.nl/record/524946 DNA barcoding, phylogeny and systematics of Golden-backed frogs (Hylarana, Ranidae) of the Western Ghats-Sri Lanka biodiversity hotspot, with the description of seven new species Naturalis Biju, S.D.; Garg, S.; Mahony, S.; Wijayathilaka, N.; Senevirathne, G.; Meegaskumbura, M.. A systematic revision of the genus Hylarana in the Western Ghats-Sri Lanka biodiversity hotspot is presented. Species delineation in Hylarana is complicated due to a lack of distinct colour differences or striking morphological characters, leading to potential misidentification. We conducted extensive surveys throughout the Western Ghats-Sri Lanka biodiversity hotspot and performed multiple gene (16S, COI and Cytb) barcoding using 103 samples collected from cultivated land and natural habitats. Genetic distance comparisons and Neighbor Joining trees indicated the presence of at least 14 candidate species in the region, supported by taxa groupings for all three genetic markers. Utilising a combination of molecular and morphological data, we describe seven... Tipo: Article / Letter to the editor Palavras-chave: Amphibia; Cryptic species; Endemism; Integrative taxonomy; Lectotypification; Multiple gene barcoding; Neotypification; Taxonomic revision; 42.82; 42.64. Ano: 2014 URL: http://www.repository.naturalis.nl/record/506456 Herinneringen aan een reis naar Sint-Helena (3) Naturalis Hartog, J.C. den. In dit derde en laatste artikel vervolgt de auteur zijn reis langs onder andere Sint-Helena en Ascencion, twee eilanden midden in de Atlantische Oceaan. Door hun geïsoleerde ligging bevatten oceanische eilanden levensvormen, die nergens anders voorkomen. Tipo: Article / Letter to the editor Palavras-chave: Islands; Endemism; Saint Helena; Ecology; Marine biology; 42.94. Ano: 1989 URL: http://www.repository.naturalis.nl/record/460103 Registros recuperados: 94 Primeira ... 1 2 3 4 5 ... Última

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