evaluating the sources of potential migrant species
... predicting species responses to the new conditions. Most forecasts are based on climate envelopes (CE), correlative approaches that project future distributions on the basis of the current climate often assuming some dispersal lag. One major caveat with this approach is that it ignores the complexit ...
... predicting species responses to the new conditions. Most forecasts are based on climate envelopes (CE), correlative approaches that project future distributions on the basis of the current climate often assuming some dispersal lag. One major caveat with this approach is that it ignores the complexit ...
The role of plant species size in invasibility: a
... highly invasive, such as Agropyron cristatum in grasslands (Heidinga and Wilson 2002), or Acer platanoides in forests (Reinhart et al. 2005), reduce species richness in plant communities but do not produce monocultures. Similarly, the highly invasive vine Pueraria montana, which is known to grow ove ...
... highly invasive, such as Agropyron cristatum in grasslands (Heidinga and Wilson 2002), or Acer platanoides in forests (Reinhart et al. 2005), reduce species richness in plant communities but do not produce monocultures. Similarly, the highly invasive vine Pueraria montana, which is known to grow ove ...
Polychaetes of the soft bottoms of the Straits of Magellan - ICM-CSIC
... Fax: +39 81 984201; e-mail: [email protected] ...
... Fax: +39 81 984201; e-mail: [email protected] ...
Galapagos vertebrates: endangered status and conservation actions
... The Galapagos penguin, Spheniscus mendiculus, is distributed along the coasts of Fernandina and Isabela and the northern coast of Floreana. The flightless cormorant, Phalacrocorax harrisi, is found on the coasts of Fernandina and Isabela. Both species are catalogued on the IUCN’s Red List as Endange ...
... The Galapagos penguin, Spheniscus mendiculus, is distributed along the coasts of Fernandina and Isabela and the northern coast of Floreana. The flightless cormorant, Phalacrocorax harrisi, is found on the coasts of Fernandina and Isabela. Both species are catalogued on the IUCN’s Red List as Endange ...
V h -t
... Vegetation surveys were conducted over an area of more than three million hectares from August to October 2004. Two major floristic units were identified, namely the Fynbos Biome related (Mountain Renosterveld) and Succulent Karoo Biome related units. An analysis of the floristic data of the predomi ...
... Vegetation surveys were conducted over an area of more than three million hectares from August to October 2004. Two major floristic units were identified, namely the Fynbos Biome related (Mountain Renosterveld) and Succulent Karoo Biome related units. An analysis of the floristic data of the predomi ...
Geography and Recovery under the U.S. Endangered Species Act
... Abstract: The U.S. Endangered Species Act (ESA) defines an endangered species as one “at risk of extinction throughout all or a significant portion of its range.” The prevailing interpretation of this phrase, which focuses exclusively on the overall viability of listed species without regard to thei ...
... Abstract: The U.S. Endangered Species Act (ESA) defines an endangered species as one “at risk of extinction throughout all or a significant portion of its range.” The prevailing interpretation of this phrase, which focuses exclusively on the overall viability of listed species without regard to thei ...
Studying insect diversity in the tropics
... Our thesis here is that insect ecologists can learn from the success plant ecologists have had in understanding tropical diversity. We suggest this is based on two main foundations: the availability of complete or near-complete £oral inventories for a number of di¡erent areas, and the intensive stud ...
... Our thesis here is that insect ecologists can learn from the success plant ecologists have had in understanding tropical diversity. We suggest this is based on two main foundations: the availability of complete or near-complete £oral inventories for a number of di¡erent areas, and the intensive stud ...
roads and carrion-feeding beetle communitiesrequenting beetles
... were from taxa known to be carrion-feeders (Silphidae, Trogidae) or predators on fly eggs or maggots (e.g. Staphylinidae). Like other studies of carrion (e.g. Sikes 1994) the assemblages also included beetles from families such as Curculionidae whose role in the carrion beetle assemblage is unclear. ...
... were from taxa known to be carrion-feeders (Silphidae, Trogidae) or predators on fly eggs or maggots (e.g. Staphylinidae). Like other studies of carrion (e.g. Sikes 1994) the assemblages also included beetles from families such as Curculionidae whose role in the carrion beetle assemblage is unclear. ...
Habitat heterogeneity, species diversity and null models
... Previous studies of mammals suggest that habitat heterogeneity may be an important structuring agent in this landscape. Total rodent density and species composition differed between areas that had been cleared of shrubs and those that were undisturbed (Colbert 1986, Willig et al. 1993). Moreover, di ...
... Previous studies of mammals suggest that habitat heterogeneity may be an important structuring agent in this landscape. Total rodent density and species composition differed between areas that had been cleared of shrubs and those that were undisturbed (Colbert 1986, Willig et al. 1993). Moreover, di ...
The impact of large terrestrial carnivores on Pleistocene ecosystems
... based on modern observations, it is generally believed that populations of megaherbivores (>800 kg) are largely immune to the effects of predation and this perception has been extended into the Pleistocene. However, as shown here, the species richness of big carnivores was greater in the Pleistocene ...
... based on modern observations, it is generally believed that populations of megaherbivores (>800 kg) are largely immune to the effects of predation and this perception has been extended into the Pleistocene. However, as shown here, the species richness of big carnivores was greater in the Pleistocene ...
Community assembly and invasion: An experimental Joseph Fargione* , Cynthia S. Brown
... Whether communities are assembled randomly or with a repeatable process has broad implications for basic and applied ecology. Processes that depend on species increasing from rarity, such as invasion, coexistence, succession, and competition, may all be affected by the stronger within-guild interact ...
... Whether communities are assembled randomly or with a repeatable process has broad implications for basic and applied ecology. Processes that depend on species increasing from rarity, such as invasion, coexistence, succession, and competition, may all be affected by the stronger within-guild interact ...
Invasive-Species-of-Sint-Eustatius
... in their ballast water. Insects can get into wood, shipping palettes and crates that are shipped around the world. Some species are brought in by residents as ornamental plants for their homes, gardens, or even to enhance their food supply. The seeds of these plants can escape into the wild and beco ...
... in their ballast water. Insects can get into wood, shipping palettes and crates that are shipped around the world. Some species are brought in by residents as ornamental plants for their homes, gardens, or even to enhance their food supply. The seeds of these plants can escape into the wild and beco ...
DOC - FishBase
... Impact of Fishing on the Abundance of Marine Species Rainer Froese and Kathleen Kesner-Reyes The Census of Marine Life program aims to document the existence, distribution and abundance of marine organisms using all suitable data sources. In this study we analysed time series of catch data published ...
... Impact of Fishing on the Abundance of Marine Species Rainer Froese and Kathleen Kesner-Reyes The Census of Marine Life program aims to document the existence, distribution and abundance of marine organisms using all suitable data sources. In this study we analysed time series of catch data published ...
Chestnut Blight Endothia parasitica
... the east coast of Africa to feed the Italian army, which was invading Ethiopia at the time Quickly spread to local cattle and wildlife populations From there the disease swept across eastern and southern Africa, with devastating consequences Within 10 years it had reached South Africa ...
... the east coast of Africa to feed the Italian army, which was invading Ethiopia at the time Quickly spread to local cattle and wildlife populations From there the disease swept across eastern and southern Africa, with devastating consequences Within 10 years it had reached South Africa ...
Time-of-day bias in diurnal raptor abundance and richness
... (Díaz et al. 1996, Sanz-Zuasti & Velasco 2005). To calculate species richness, ‘non-breeding’ was taken as the months from September to February and ‘breeding’ from March to August since this is the categorization that is best suited to the greatest number of studied species (Díaz et al. 1996, Sanz- ...
... (Díaz et al. 1996, Sanz-Zuasti & Velasco 2005). To calculate species richness, ‘non-breeding’ was taken as the months from September to February and ‘breeding’ from March to August since this is the categorization that is best suited to the greatest number of studied species (Díaz et al. 1996, Sanz- ...
Oecologia (1994) 97:326-332 Springer-Verlag 1994 ORIGINAL PAPER
... lizards are presented by Schall (1990b). Both parasites are common in A. agama in Sierra Leone and are the only known malarial species infecting the lizards. We collected lizards at 22 sites scattered throughout the country; these are shown in Fig. 2 and Table 1. We had sites in a variety of habitat ...
... lizards are presented by Schall (1990b). Both parasites are common in A. agama in Sierra Leone and are the only known malarial species infecting the lizards. We collected lizards at 22 sites scattered throughout the country; these are shown in Fig. 2 and Table 1. We had sites in a variety of habitat ...
Seasonality of a Diverse Beetle Assemblage Inhabiting Lowland
... Stork 2007a) through key studies of tropical insect host-specificity, and beta-diversity (Novotný et al. 2002b, 2007; Dyer et al. 2007). One of the less well-studied areas is the temporal dynamics of insects in tropical forests (Wolda 1988). Such studies documenting intra- and interannual populatio ...
... Stork 2007a) through key studies of tropical insect host-specificity, and beta-diversity (Novotný et al. 2002b, 2007; Dyer et al. 2007). One of the less well-studied areas is the temporal dynamics of insects in tropical forests (Wolda 1988). Such studies documenting intra- and interannual populatio ...
Is there an influence of historical events on contemporary fish
... considering the absolute overall size, species richness should be greater in North America than in Europe (Mahon, 1984). However, these assumptions are based on comparisons involving a limited number of rivers and/or lakes. The purpose of the present study is to examine the relative and joint effect ...
... considering the absolute overall size, species richness should be greater in North America than in Europe (Mahon, 1984). However, these assumptions are based on comparisons involving a limited number of rivers and/or lakes. The purpose of the present study is to examine the relative and joint effect ...
Temporal variability in patterns of association among fish species on
... a sedentary juvenile and adult life (Sale 1980a). Small patches of reef habitat, 1 m or less in diameter, can act as islands for many species when they are separated from similar patches by a few meters of open sand or other unsuitable habitat. These 'islands' differ in one important respect from th ...
... a sedentary juvenile and adult life (Sale 1980a). Small patches of reef habitat, 1 m or less in diameter, can act as islands for many species when they are separated from similar patches by a few meters of open sand or other unsuitable habitat. These 'islands' differ in one important respect from th ...
Temporal stability in forest productivity increases with tree diversity
... To clarify the role of asymmetry between species, Loreau & de Mazancourt (2013) identified three main mechanisms linked to interspecific differences that may drive the stabilising effect of diversity in ecosystem properties (although they are not exclusive): (1) differences in species’ intrinsic res ...
... To clarify the role of asymmetry between species, Loreau & de Mazancourt (2013) identified three main mechanisms linked to interspecific differences that may drive the stabilising effect of diversity in ecosystem properties (although they are not exclusive): (1) differences in species’ intrinsic res ...
Chapter 2. Examples of Variation Patterns within Species and Genera
... Turesson (1922b) described four ecotypes of Hieracium umbellatum,' one lypical of shifting sand dunes, one of arenaceous fields, one of sea cliffs, and one of interior woodlands. Furthermore, since the ecotype is produced by the direGt selective action of the environment on a heterozygous population ...
... Turesson (1922b) described four ecotypes of Hieracium umbellatum,' one lypical of shifting sand dunes, one of arenaceous fields, one of sea cliffs, and one of interior woodlands. Furthermore, since the ecotype is produced by the direGt selective action of the environment on a heterozygous population ...
Interesting distributional records and notes on the biology of bird
... between 1,900 and 2,200 m, mainly through mist-netting. It was occasionally seen accompanying mixed-species understorey flocks, but also in pairs or alone foraging at low heights in dense clumps of mosses and dead leaves. Otonga represents the southernmost site for this species in the western Andes, ...
... between 1,900 and 2,200 m, mainly through mist-netting. It was occasionally seen accompanying mixed-species understorey flocks, but also in pairs or alone foraging at low heights in dense clumps of mosses and dead leaves. Otonga represents the southernmost site for this species in the western Andes, ...
Cryptic Speciation in the Caesalpinia hintonii
... Within areas of seasonally dry forest, a complex of vegetation types occurs, depending on local climate, soil and topography (Pennington et al., 2000). Thus, the complexity of patterns expected in seasonally dry forest is due to contraction – expansion cycles that took place with limited geographica ...
... Within areas of seasonally dry forest, a complex of vegetation types occurs, depending on local climate, soil and topography (Pennington et al., 2000). Thus, the complexity of patterns expected in seasonally dry forest is due to contraction – expansion cycles that took place with limited geographica ...
Species-specific effects of genetic diversity and species
... Province (29°10′19″N, 118°03′50″E). These locations are representative of species-rich Chinese mixed broad-leaved forests, where evergreen species dominate in abundance, but not in numbers (Bruelheide et al. 2011; Yu et al. 2001). For each species, seeds were collected as separate SF from 8 maternal ...
... Province (29°10′19″N, 118°03′50″E). These locations are representative of species-rich Chinese mixed broad-leaved forests, where evergreen species dominate in abundance, but not in numbers (Bruelheide et al. 2011; Yu et al. 2001). For each species, seeds were collected as separate SF from 8 maternal ...
evolution of old and new world migration systems
... Groningen, August 2001. Ardea 90(3) special issue: 525-537. The apparent nomadism of Palearctic migrant birds during the wintering period in Afrotropical savannah resulted in their characterisation as wandering interlopers, subordinate to Tropical residents, forced to subsist on temporary resource c ...
... Groningen, August 2001. Ardea 90(3) special issue: 525-537. The apparent nomadism of Palearctic migrant birds during the wintering period in Afrotropical savannah resulted in their characterisation as wandering interlopers, subordinate to Tropical residents, forced to subsist on temporary resource c ...
Fauna of Africa
Fauna of Africa, in its broader sense, is all the animals living in Africa and its surrounding seas and islands. The more characteristic African fauna is found in the Afrotropical ecoregion. Lying almost entirely within the tropics, and equally to north and south of the equator creates favourable conditions for rich wildlife.