Global Exchange and Accumulation of Non
... species that form self-sustaining populations in new regions4,5) is still very limited. Nevertheless, there are many presumptions about the distributions and patterns of spread of alien species. For example, it has frequently been suggested that Old World species have spread more widely outside thei ...
... species that form self-sustaining populations in new regions4,5) is still very limited. Nevertheless, there are many presumptions about the distributions and patterns of spread of alien species. For example, it has frequently been suggested that Old World species have spread more widely outside thei ...
Tilman et al. Science 2001
... biomass on species number and composition was not explained solely by sampling effects for a species pool containing some poorly performing species. We tested the sampling hypothesis that the most productive species determined the effects of diversity (6, 9, 17) by retaining in analyses of year 2000 ...
... biomass on species number and composition was not explained solely by sampling effects for a species pool containing some poorly performing species. We tested the sampling hypothesis that the most productive species determined the effects of diversity (6, 9, 17) by retaining in analyses of year 2000 ...
Butterflies of Sikkim with Reference to Elevational Gradient in
... change rapidly from tropical to subtropical, temperate, alpine and finally to cold desert forms. It follows from this rapid transition that all the floral and faunal taxa in Sikkim have very small distribution ranges within the State. Because of the diversity and high variation in physical and ecolo ...
... change rapidly from tropical to subtropical, temperate, alpine and finally to cold desert forms. It follows from this rapid transition that all the floral and faunal taxa in Sikkim have very small distribution ranges within the State. Because of the diversity and high variation in physical and ecolo ...
SHORT COMMUNICATION Microhabitat distribution of Drapetisca
... that regard. Interestingly, the few known specimens of the Chinese species Drapetisca bicruris (Tu & Li 2006) were not found specifically on tree trunks, but were collected ‘‘from the roots of a tree, and especially the hollow in an old tree’’ (Shuqiang Li pers. comm.). The present study provides ev ...
... that regard. Interestingly, the few known specimens of the Chinese species Drapetisca bicruris (Tu & Li 2006) were not found specifically on tree trunks, but were collected ‘‘from the roots of a tree, and especially the hollow in an old tree’’ (Shuqiang Li pers. comm.). The present study provides ev ...
Problems in the Measurement of Evenness in Ecology Rauno V
... instance, is the logarithm of the number of 'abundant' species. Evenness measures should measure the equality of The use of diversity indices, which combine species richness and evenness of abundance distribution into a abundances in the community: maximum evenness single value, has often been crit ...
... instance, is the logarithm of the number of 'abundant' species. Evenness measures should measure the equality of The use of diversity indices, which combine species richness and evenness of abundance distribution into a abundances in the community: maximum evenness single value, has often been crit ...
Diversity and Productivity in a Long-Term Grassland Experiment David Tilman,
... biomass on species number and composition was not explained solely by sampling effects for a species pool containing some poorly performing species. We tested the sampling hypothesis that the most productive species determined the effects of diversity (6, 9, 17) by retaining in analyses of year 2000 ...
... biomass on species number and composition was not explained solely by sampling effects for a species pool containing some poorly performing species. We tested the sampling hypothesis that the most productive species determined the effects of diversity (6, 9, 17) by retaining in analyses of year 2000 ...
An Index of Diversity and the Relation of Certain Concepts to Diversity
... overlapping,or synonymousmeanings. ness is the same throughout the area studied. In Most widely used are the antonyms: poor- multi-species communities a test of homogeneity rich, uniform-diverse, homogeneous-heterogene-in the statistical sense has rarely been applied to All have been applied to othe ...
... overlapping,or synonymousmeanings. ness is the same throughout the area studied. In Most widely used are the antonyms: poor- multi-species communities a test of homogeneity rich, uniform-diverse, homogeneous-heterogene-in the statistical sense has rarely been applied to All have been applied to othe ...
A Census of Fishes and Everything They Eat
... After all, fisheries harvest a wide range of species, from invertebrates to mammals. Understanding fisheries dynamics in the ocean requires knowing what animals eat and what eats them. Thus, the Census of Fishes became the Census of Marine Life in 2000. On 22 May 2012 the census was the focus of the ...
... After all, fisheries harvest a wide range of species, from invertebrates to mammals. Understanding fisheries dynamics in the ocean requires knowing what animals eat and what eats them. Thus, the Census of Fishes became the Census of Marine Life in 2000. On 22 May 2012 the census was the focus of the ...
Testing hypotheses on the ecological patterns of rarity using a novel
... least two years were used for our analyses. Other studies considered inappropriate for this analysis include those (i) whose authors openly declared potential sampling biases toward specific snake guilds or species, (ii) in which data for only some species of the community are given (Marques et al. ...
... least two years were used for our analyses. Other studies considered inappropriate for this analysis include those (i) whose authors openly declared potential sampling biases toward specific snake guilds or species, (ii) in which data for only some species of the community are given (Marques et al. ...
Commonness and rarity determinants of woody
... Definition of forest types The study region is extremely heterogeneous both environmentally and floristically. To avoid results driven by such internal variability, we apportioned the plots into six different forest types. The most distinctive floristic formation is the semideciduous dry forest (DR; ...
... Definition of forest types The study region is extremely heterogeneous both environmentally and floristically. To avoid results driven by such internal variability, we apportioned the plots into six different forest types. The most distinctive floristic formation is the semideciduous dry forest (DR; ...
3.8 Reptiles - North Carolina Wildlife Resources Commission
... Habitat loss and fragmentation, due to development and silviculture, are some of the biggest reasons for these declines, as well as road mortality, and outright killing. Another significant issue for the Eastern Diamondback Rattleskake is limited refugia. Refugium sites are limited to tree stumps, a ...
... Habitat loss and fragmentation, due to development and silviculture, are some of the biggest reasons for these declines, as well as road mortality, and outright killing. Another significant issue for the Eastern Diamondback Rattleskake is limited refugia. Refugium sites are limited to tree stumps, a ...
Saving the World`s Terrestrial Megafauna - Research
... M. Newsome are affiliated with the Global Trophic Cascades Program of the Department of Forest Ecosystems and Society at Oregon State University, in Corvallis; TMN is also with the Desert Ecology Research Group of the School of Biological Sciences at the University of Sydney, in Australia; the Centr ...
... M. Newsome are affiliated with the Global Trophic Cascades Program of the Department of Forest Ecosystems and Society at Oregon State University, in Corvallis; TMN is also with the Desert Ecology Research Group of the School of Biological Sciences at the University of Sydney, in Australia; the Centr ...
The influence of biodiversity on invasibility of terrestrial plant
... resource model proposed by Davis et al. (2000). Riparian zones are subject to nutrient loading and seasonal disturbance, an important point to be discussed in the next section. Lonsdale (1999) examined global patterns of diversity and found that invasion increased with latitude and there is a positi ...
... resource model proposed by Davis et al. (2000). Riparian zones are subject to nutrient loading and seasonal disturbance, an important point to be discussed in the next section. Lonsdale (1999) examined global patterns of diversity and found that invasion increased with latitude and there is a positi ...
Molecular phylogenetics of the hummingbird genus Coeligena
... occur along humid montane forests and thus provide an ideal system to study tropical Andean radiations. The genus Coeligena consists of 11 (Remsen et al., 2008) to 12 (Schuchmann, 1999) species distributed throughout the humid Andes from Venezuela to central Bolivia (Schuchmann, 1999; Fig. 1). Withi ...
... occur along humid montane forests and thus provide an ideal system to study tropical Andean radiations. The genus Coeligena consists of 11 (Remsen et al., 2008) to 12 (Schuchmann, 1999) species distributed throughout the humid Andes from Venezuela to central Bolivia (Schuchmann, 1999; Fig. 1). Withi ...
The natural vegetation of the Wollongong area
... It is commonly accepted, both in popular opinIon and in s~ientif.ic literature that the Illawarra was once covered in its entirety In luxuriant'rainforest. This view is incorrect, as is clearly evidenced by the vegetation which remains in the area t~day, The or.iginal vegetation cover of the Wollong ...
... It is commonly accepted, both in popular opinIon and in s~ientif.ic literature that the Illawarra was once covered in its entirety In luxuriant'rainforest. This view is incorrect, as is clearly evidenced by the vegetation which remains in the area t~day, The or.iginal vegetation cover of the Wollong ...
Saving the World`s Terrestrial Megafauna
... M. Newsome are affiliated with the Global Trophic Cascades Program of the Department of Forest Ecosystems and Society at Oregon State University, in Corvallis; TMN is also with the Desert Ecology Research Group of the School of Biological Sciences at the University of Sydney, in Australia; the Centr ...
... M. Newsome are affiliated with the Global Trophic Cascades Program of the Department of Forest Ecosystems and Society at Oregon State University, in Corvallis; TMN is also with the Desert Ecology Research Group of the School of Biological Sciences at the University of Sydney, in Australia; the Centr ...
This article discusses the various hypotheses proposed to explain
... Researchers today have an interest in the same topics of disturbance and diversity explained by Connell’s classic paper. Like Connell, Adjeroud and his colleagues have studied coral reefs, but instead of asking how the diversity is maintained, they study the general effects of disturbance with the c ...
... Researchers today have an interest in the same topics of disturbance and diversity explained by Connell’s classic paper. Like Connell, Adjeroud and his colleagues have studied coral reefs, but instead of asking how the diversity is maintained, they study the general effects of disturbance with the c ...
Geographic and taxonomic distribution of a positive interaction: ant
... Parasitoid species attack both pollinator and non-pollinator galling wasps, and always oviposit from outside the ®g. Tree speci®city of these non-pollinating wasp groups also appears to be well developed, although it may not be as extreme as for pollinators (Boucek et al. 1981; Wiebes 1982; Boucek 1 ...
... Parasitoid species attack both pollinator and non-pollinator galling wasps, and always oviposit from outside the ®g. Tree speci®city of these non-pollinating wasp groups also appears to be well developed, although it may not be as extreme as for pollinators (Boucek et al. 1981; Wiebes 1982; Boucek 1 ...
Niche versus chance and tree diversity in forest gaps
... resources. For example, if light and soil resources vary pretrees do not show enough differences in distribution or dictably within and among gaps, competition could lead to specialization on different levels of these resources 46 . Furbehavior to suggest that coexistence of many species is thermore ...
... resources. For example, if light and soil resources vary pretrees do not show enough differences in distribution or dictably within and among gaps, competition could lead to specialization on different levels of these resources 46 . Furbehavior to suggest that coexistence of many species is thermore ...
Effects of bottom trawling on the benthic assemblages in the south
... the physical attributes of the habitats, therefore implying a reduction in biodiversity, but can also cause changes to the benthic assemblage structure, species abundance, and their size structure (GARCÍA-RODRÍGUES et al., 2011). However, most of the disturbances at the sea bottom remain unrecorded ...
... the physical attributes of the habitats, therefore implying a reduction in biodiversity, but can also cause changes to the benthic assemblage structure, species abundance, and their size structure (GARCÍA-RODRÍGUES et al., 2011). However, most of the disturbances at the sea bottom remain unrecorded ...
Supporting Information Methods S1 Methods S1 Full methodology
... (1999) in assuming that most genera are comprised entirely of either C3 or C4 species. Forty years of research on photosynthetic pathway in grasses has proved that this assumption is generally reasonable, although rare exceptions have been discovered in recent years (e.g. Cerros-Tlatilpa & Columbus, ...
... (1999) in assuming that most genera are comprised entirely of either C3 or C4 species. Forty years of research on photosynthetic pathway in grasses has proved that this assumption is generally reasonable, although rare exceptions have been discovered in recent years (e.g. Cerros-Tlatilpa & Columbus, ...
separating effects of habitat and geographical position
... forests, meadows, swamps and mountain open habitats. Some less common habitat types were important only because of the presence of rare species. Latitude and longitude invariably accounted for a large proportion of total variance, and their effect was highly significant even after controlling for th ...
... forests, meadows, swamps and mountain open habitats. Some less common habitat types were important only because of the presence of rare species. Latitude and longitude invariably accounted for a large proportion of total variance, and their effect was highly significant even after controlling for th ...
Coastal Plain Endemism and its implications for biodiversity
... Stewart, Gordon, Avon Park, etc.) • State conservation lands • Some large private preserves (TNC) ...
... Stewart, Gordon, Avon Park, etc.) • State conservation lands • Some large private preserves (TNC) ...
Parasitism: The parasite niche
... local extinction. Where the realised niches are sufficiently different, potential competitors can co-exist by resource partitioning. ...
... local extinction. Where the realised niches are sufficiently different, potential competitors can co-exist by resource partitioning. ...
FISH SPECIES COMPOSITION IN SEAGRASS BEDS OF TANJUNG
... abundantly in terms of individual numbers, however Apogon margaritophorus and A. hartzfeldii were the most dominant. These two species were permanent resident, indicated by a catch of large number in different stages of life cycle. We also noticed that many adults of A. margaritophorus kept fertiliz ...
... abundantly in terms of individual numbers, however Apogon margaritophorus and A. hartzfeldii were the most dominant. These two species were permanent resident, indicated by a catch of large number in different stages of life cycle. We also noticed that many adults of A. margaritophorus kept fertiliz ...
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.