Species tolerance
... • Animals interact with biotic and abiotic factors in ways which shape their survival and distributions • Biomes are delineated by abiotic factors, but biotic factors play a role too. • Biomes are described by plant communities which are ‘controlled’ by temperature and precipitation • Oceans are dif ...
... • Animals interact with biotic and abiotic factors in ways which shape their survival and distributions • Biomes are delineated by abiotic factors, but biotic factors play a role too. • Biomes are described by plant communities which are ‘controlled’ by temperature and precipitation • Oceans are dif ...
(Introduced) species
... Tropical forests are by no means the only sites with endangered biodiversity. Worldwide, nearly as much temperate rainforest – once covering an area nearly the size of Malaysia – has also been lost. Although the total extent of forest in the northern temperate and boreal regions has not changed much ...
... Tropical forests are by no means the only sites with endangered biodiversity. Worldwide, nearly as much temperate rainforest – once covering an area nearly the size of Malaysia – has also been lost. Although the total extent of forest in the northern temperate and boreal regions has not changed much ...
Desirable mathematical properties of indicators for biodiversity change
... Finally, indicators should have desirable statistical and mathematical properties. Statistical properties concern the estimators of indicators which preferably have confidence intervals, allow statistical testing of changes and are unbiased and precise (Sutherland, 2006). Mathematical properties desc ...
... Finally, indicators should have desirable statistical and mathematical properties. Statistical properties concern the estimators of indicators which preferably have confidence intervals, allow statistical testing of changes and are unbiased and precise (Sutherland, 2006). Mathematical properties desc ...
Safeguarding Species - a strategy for species recovery
... The RSPB’s work is driven by a passionate belief that we all have a responsibility to protect birds and the environment. Bird populations reflect the health of the planet on which our future depends. Today, all too many bird species are in serious decline. Globally, in the last 30 years, 21 species ...
... The RSPB’s work is driven by a passionate belief that we all have a responsibility to protect birds and the environment. Bird populations reflect the health of the planet on which our future depends. Today, all too many bird species are in serious decline. Globally, in the last 30 years, 21 species ...
Primary succession on Mount St. Helens, with reference to Surtsey
... are deemed “extinct” (Table 1). More species persisted at higher elevations where cover was lower. After a lag, cover on Pumice began to accrue (Fig. 3). Cover in lower plots peaked in 2000, then declined. Cover developed slowly in upper plots. Despite pulses of L. lepidus (1999, 2004, 2007), cover ...
... are deemed “extinct” (Table 1). More species persisted at higher elevations where cover was lower. After a lag, cover on Pumice began to accrue (Fig. 3). Cover in lower plots peaked in 2000, then declined. Cover developed slowly in upper plots. Despite pulses of L. lepidus (1999, 2004, 2007), cover ...
Document
... Scientists have presented the most comprehensive evidence to date that climate extremes such as droughts and record temperatures are failing to change people's minds about global warming. "Our results show that politics has the most important effect on perceptions of climate change." Some previous s ...
... Scientists have presented the most comprehensive evidence to date that climate extremes such as droughts and record temperatures are failing to change people's minds about global warming. "Our results show that politics has the most important effect on perceptions of climate change." Some previous s ...
Diet, Morphology, and Interspecific Killing in Carnivora
... Resource overlap is commonly used to assess the potential for competition (Schoener 1983); therefore, we tested ...
... Resource overlap is commonly used to assess the potential for competition (Schoener 1983); therefore, we tested ...
watershed plan - Fish and Wildlife Compensation Program
... Conservation Framework is British Columbia‟s approach for maintaining the rich biodiversity of the province, providing a set of science-based tools and prioritized actions for conserving species and ecosystems in B.C. Program Plans for Freshwater Fisheries, Wildlife and Ecosystems3 articulate a clea ...
... Conservation Framework is British Columbia‟s approach for maintaining the rich biodiversity of the province, providing a set of science-based tools and prioritized actions for conserving species and ecosystems in B.C. Program Plans for Freshwater Fisheries, Wildlife and Ecosystems3 articulate a clea ...
Experimental evidence that the introduced fire ant, Solenopsis
... native and the introduced species are either habitat generalists or disturbed habitat specialists in the region (J.R.K., unpublished data). Some species were sampled in the second year but not the first, but these occurred in such low numbers (one or a few workers) that it is not clear whether these ...
... native and the introduced species are either habitat generalists or disturbed habitat specialists in the region (J.R.K., unpublished data). Some species were sampled in the second year but not the first, but these occurred in such low numbers (one or a few workers) that it is not clear whether these ...
Life–history and ecological distribution of chameleons
... significant inter–group differences at either intra–specific level (with the females of the two best studied species, i.e. R. spectrum and C. gracilis, having a wider food niche breadth than males) or inter–specific level (with a continuum of dietary specialization from the less generalist (C. crist ...
... significant inter–group differences at either intra–specific level (with the females of the two best studied species, i.e. R. spectrum and C. gracilis, having a wider food niche breadth than males) or inter–specific level (with a continuum of dietary specialization from the less generalist (C. crist ...
Diverse Matter - at www.arxiv.org.
... island effect, i.e., at the extreme of small sampling areas, the exponential form (s logA) [16] seems to account best for data [3,17,18,19]. Despite the nonconformity among the three species-area models, it has been pointed out that they could be approximations of a common but unknown functional f ...
... island effect, i.e., at the extreme of small sampling areas, the exponential form (s logA) [16] seems to account best for data [3,17,18,19]. Despite the nonconformity among the three species-area models, it has been pointed out that they could be approximations of a common but unknown functional f ...
do plankton and benthos really exist?
... from the bottom, to ‘reappear’at the onset of the next favourable season. Pelagic communities and many benthic ones have discontinuities in the presence of species2 that need to be explained if we are to understand the cycling of matter and energy through ecosystems. The seasonal absence of many spe ...
... from the bottom, to ‘reappear’at the onset of the next favourable season. Pelagic communities and many benthic ones have discontinuities in the presence of species2 that need to be explained if we are to understand the cycling of matter and energy through ecosystems. The seasonal absence of many spe ...
Species Dynamics During Early Secondary Forest Succession
... recruited and dead trees are expected to differ in species composition, with highest species richness for the recruits. During 18 mo, we monitored recruitment and mortality of trees with height ≥ 1.5 m in eight plots in abandoned cornfields with initial fallow age of 1–5 yr, in SE Mexico. Shade-tole ...
... recruited and dead trees are expected to differ in species composition, with highest species richness for the recruits. During 18 mo, we monitored recruitment and mortality of trees with height ≥ 1.5 m in eight plots in abandoned cornfields with initial fallow age of 1–5 yr, in SE Mexico. Shade-tole ...
Life-history constraints in grassland plant species:
... method and p.p.m concentration estimated using ICP (A&L Analytical Laboratory, Memphis, TN, USA). We used species abundance data from plots receiving nutrients alone, or fences alone, as well as control plots, but did not consider the plots with both fences and nutrients added. While precluding anal ...
... method and p.p.m concentration estimated using ICP (A&L Analytical Laboratory, Memphis, TN, USA). We used species abundance data from plots receiving nutrients alone, or fences alone, as well as control plots, but did not consider the plots with both fences and nutrients added. While precluding anal ...
doi: 10.1111/j.1600-0706.2012.00005.x Subject Editor: Carlos Melian. Accepted 10 July 2012
... Species were seeded into each pitcher at an (arbitrary) biomass of 0.02 and populations went locally extinct if their biomasses dropped below 0.01. The pitcher-plant mosquito Wyeomyia smithii and midge Metriocnemus knabi pupated and eclosed from a pitcher once their biomass reached 0.1. The pitcher ...
... Species were seeded into each pitcher at an (arbitrary) biomass of 0.02 and populations went locally extinct if their biomasses dropped below 0.01. The pitcher-plant mosquito Wyeomyia smithii and midge Metriocnemus knabi pupated and eclosed from a pitcher once their biomass reached 0.1. The pitcher ...
Why are there so many species in the tropics?
... biomass of living matter; (2) how that biomass is apportioned among the ‘number of niches’ and hence among species; and (3) how rare species with specialized niches persist in the face of extinction. Productivity For the last few decades, the main ecological explanation for the LDG has been that reg ...
... biomass of living matter; (2) how that biomass is apportioned among the ‘number of niches’ and hence among species; and (3) how rare species with specialized niches persist in the face of extinction. Productivity For the last few decades, the main ecological explanation for the LDG has been that reg ...
Primates of the Río Curaray
... densities. This effect is particularly strong for the large atelids which are preferred by hunters (Aquino et al. 2000b; Peres 1990; Puertas and Bodmer 1993), but may also be pertinent for medium-sized and smaller primates (Endo et al. 2010). Being closer to Iquitos (where bushmeat was, and still is ...
... densities. This effect is particularly strong for the large atelids which are preferred by hunters (Aquino et al. 2000b; Peres 1990; Puertas and Bodmer 1993), but may also be pertinent for medium-sized and smaller primates (Endo et al. 2010). Being closer to Iquitos (where bushmeat was, and still is ...
Lifehistory constraints in grassland plant species: a growthdefence
... method and p.p.m concentration estimated using ICP (A&L Analytical Laboratory, Memphis, TN, USA). We used species abundance data from plots receiving nutrients alone, or fences alone, as well as control plots, but did not consider the plots with both fences and nutrients added. While precluding anal ...
... method and p.p.m concentration estimated using ICP (A&L Analytical Laboratory, Memphis, TN, USA). We used species abundance data from plots receiving nutrients alone, or fences alone, as well as control plots, but did not consider the plots with both fences and nutrients added. While precluding anal ...
Understanding cooccurrence by modelling species simultaneously
... Similarities in environmental responses of species can be accommodated in multispecies SDMs (Ovaskainen & Soininen 2011; Pollock, Morris & Vesk 2012), and such responses to environmental gradients can be modelled as a function of species traits (Pollock, Morris & Vesk 2012). However, not all feature ...
... Similarities in environmental responses of species can be accommodated in multispecies SDMs (Ovaskainen & Soininen 2011; Pollock, Morris & Vesk 2012), and such responses to environmental gradients can be modelled as a function of species traits (Pollock, Morris & Vesk 2012). However, not all feature ...
An Index of Diversity and the Relation of Certain Concepts to Diversity
... are so used here. Rich may be used as synony- the relationship of number of species to area mous withdiverseas definedbelow (Black et al. (species-area curves) (Poore 1964) or by the 1950, Curtis 1959, Whittaker1960, 1964, Connell distribution of species frequencies in classes acand Orias 1964). Div ...
... are so used here. Rich may be used as synony- the relationship of number of species to area mous withdiverseas definedbelow (Black et al. (species-area curves) (Poore 1964) or by the 1950, Curtis 1959, Whittaker1960, 1964, Connell distribution of species frequencies in classes acand Orias 1964). Div ...
Speciation in sea urchins - Smithsonian Tropical Research Institute
... Arbacia is yet another genus in which all extant species (except for some range overlap between A. stellata (= A. incisa), A. spatuligera, and A. dufresni on the W. coast of S. America) are allopatric. This genus is found only in the Atlantic and the eastern Pacific. Mayr (1954) considered the speci ...
... Arbacia is yet another genus in which all extant species (except for some range overlap between A. stellata (= A. incisa), A. spatuligera, and A. dufresni on the W. coast of S. America) are allopatric. This genus is found only in the Atlantic and the eastern Pacific. Mayr (1954) considered the speci ...
Diversity, Structure and Regeneration Status of
... categorized Ethiopian vegetation in to nine general categories for the purpose of developing the conservation strategy of Ethiopia. Among the 9 vegetation types of Ethiopia, four of them occur in the dryland regions of the country The four vegetation types that are found in the drylands of Ethiopia ...
... categorized Ethiopian vegetation in to nine general categories for the purpose of developing the conservation strategy of Ethiopia. Among the 9 vegetation types of Ethiopia, four of them occur in the dryland regions of the country The four vegetation types that are found in the drylands of Ethiopia ...
Oecologia - Florida State University
... The first experiment was designed to test the reality of the positive association of harpacticoid copepods with isolated short shoots that appeared in some preliminary data (Waldo, unpublished). The experiment ran for 11 days in August, 1981. At the time of sampling, the short shoots and mimics were ...
... The first experiment was designed to test the reality of the positive association of harpacticoid copepods with isolated short shoots that appeared in some preliminary data (Waldo, unpublished). The experiment ran for 11 days in August, 1981. At the time of sampling, the short shoots and mimics were ...
Biodiversity and ecosystem productivity in a fluctuating environment
... case of determination by dominance, if there are two types of species A and B, such that species A always have a productivity that is higher than that of species B, there is no difference as regards ecosystem productivity between a monoculture of one species A and a mixture of one A plus any number ...
... case of determination by dominance, if there are two types of species A and B, such that species A always have a productivity that is higher than that of species B, there is no difference as regards ecosystem productivity between a monoculture of one species A and a mixture of one A plus any number ...
99. Woodruff, D.S. The problems of conserving genes and species
... tionists as habitats become fragmented arid populations smaller. The maintenance of genetic variation wi11 increasingly depend on the artificial movement of organisms (or their seeds and gametes) between patches of the metapopulation. Although low rates of gene flow (one animal per generation) betwe ...
... tionists as habitats become fragmented arid populations smaller. The maintenance of genetic variation wi11 increasingly depend on the artificial movement of organisms (or their seeds and gametes) between patches of the metapopulation. Although low rates of gene flow (one animal per generation) betwe ...