Giving-up densities of foraging gerbils: the effect of interspecific
... the marginal value theorem does not consider the costs of foraging in a patch other than the cost of not foraging in another higher-density patch, Brown’s theory considers three foraging costs – metabolic, predation and missed opportunity (see below). All three costs were found to be important for g ...
... the marginal value theorem does not consider the costs of foraging in a patch other than the cost of not foraging in another higher-density patch, Brown’s theory considers three foraging costs – metabolic, predation and missed opportunity (see below). All three costs were found to be important for g ...
Cohabitation promotes high diversity of clownfishes in the Coral
... area of 3% of the tropical Indo-West and Central Pacific, but contains 52% of its total reef fish species [17]. Cohabitation has been observed within [18,19] and between coral reef fish families [20] and if cohabitation facilitates high species richness we would hypothesize that the proportion of co ...
... area of 3% of the tropical Indo-West and Central Pacific, but contains 52% of its total reef fish species [17]. Cohabitation has been observed within [18,19] and between coral reef fish families [20] and if cohabitation facilitates high species richness we would hypothesize that the proportion of co ...
Pinyon Jay - New Mexico Avian Conservation Partners
... populations (Sedgwick and Ryder 1987). Habitat may also be degraded by poorly planned woodland thinning and tree removal efforts. Habitat loss due to development and urban encroachment is a problem in some areas. Unlike ponderosa pine forests, where fires may naturally occur as frequently as every 3 ...
... populations (Sedgwick and Ryder 1987). Habitat may also be degraded by poorly planned woodland thinning and tree removal efforts. Habitat loss due to development and urban encroachment is a problem in some areas. Unlike ponderosa pine forests, where fires may naturally occur as frequently as every 3 ...
SPAR SWG changes to Ramsar Criteria
... especially during migration periods and/or where flyway systems of different populations intersect at major wetlands. Where such populations are indistinguishable in the field, as is usually the case, this can present practical problems as to which 1% threshold to apply. Where such mixed populations ...
... especially during migration periods and/or where flyway systems of different populations intersect at major wetlands. Where such populations are indistinguishable in the field, as is usually the case, this can present practical problems as to which 1% threshold to apply. Where such mixed populations ...
The relationships between net primary productivity, human
... Harcourt et al., 2001; Parks & Harcourt, 2002; Vázquez & Gaston, in press). I also calculated the mean NPP for each park (sampling grain was 4 km2) and correlated this with park size to determine if high productivity parks were mostly small. Correlations between human development and species richne ...
... Harcourt et al., 2001; Parks & Harcourt, 2002; Vázquez & Gaston, in press). I also calculated the mean NPP for each park (sampling grain was 4 km2) and correlated this with park size to determine if high productivity parks were mostly small. Correlations between human development and species richne ...
How do they get their food?
... • Benefits: How much and quality of food patch supplies: patch quality. • Costs: How much energy needed to get to patch: central place foragers this is biggie • Costs: How much energy needed to harvest food that is there. Again, not just quantity of food resource but how easy it is to get/handle, et ...
... • Benefits: How much and quality of food patch supplies: patch quality. • Costs: How much energy needed to get to patch: central place foragers this is biggie • Costs: How much energy needed to harvest food that is there. Again, not just quantity of food resource but how easy it is to get/handle, et ...
Behavioral Diversity (Ethodiversity): A Neglected Level in the Study
... 1992, asking them for a definition of biodiversity and obtained an array of different answers. Van Dyke (2008) lists 14 definitions compiled from the literature. Entire books are dedicated to defining and describing this concept (Lévêque and Mounolou, 2003; Gaston and Spicer, 2004; Maclaurin and Ste ...
... 1992, asking them for a definition of biodiversity and obtained an array of different answers. Van Dyke (2008) lists 14 definitions compiled from the literature. Entire books are dedicated to defining and describing this concept (Lévêque and Mounolou, 2003; Gaston and Spicer, 2004; Maclaurin and Ste ...
Oral Presentation Abstracts
... Abstract - Until recently, New York City’s breeding Canis latrans (Coyote) population had remained restricted to the Bronx since the species first colonized New York City ~20 years ago. The known exception was 1 lone male Coyote living in a wooded area in Queens. Though NYC Coyotes lived in urban ar ...
... Abstract - Until recently, New York City’s breeding Canis latrans (Coyote) population had remained restricted to the Bronx since the species first colonized New York City ~20 years ago. The known exception was 1 lone male Coyote living in a wooded area in Queens. Though NYC Coyotes lived in urban ar ...
Pfeiffer et al. 2003
... ground in a grain mill to produce a variety of particle sizes ranging from whole seeds to floor. This standard procedure ...
... ground in a grain mill to produce a variety of particle sizes ranging from whole seeds to floor. This standard procedure ...
10/4 version of Chapter3
... even if a community remains in equilibrium on a large scale, species presence on a small scale changes ...
... even if a community remains in equilibrium on a large scale, species presence on a small scale changes ...
Seafarers or castaways: ecological traits associated with rafting
... driftwood, and man-made objects such as buoys, oil barrels, fishing gear and fish aggregation devices (FADs). FADs are man-made structures, floating at or just below the surface, which are deployed to enhance fisheries by attracting pelagic fish (Castro et al., 2002; Dempster & Taquet, 2004) and are ...
... driftwood, and man-made objects such as buoys, oil barrels, fishing gear and fish aggregation devices (FADs). FADs are man-made structures, floating at or just below the surface, which are deployed to enhance fisheries by attracting pelagic fish (Castro et al., 2002; Dempster & Taquet, 2004) and are ...
Trait matching of flower visitors and crops predicts
... abundance of a few pollinator species is commonly managed for greater yield. Our results suggest that the identification and enhancement of pollinator species with traits matching those of the focal crop, as well as the enhancement of pollinator richness and evenness, will increase crop yield beyond ...
... abundance of a few pollinator species is commonly managed for greater yield. Our results suggest that the identification and enhancement of pollinator species with traits matching those of the focal crop, as well as the enhancement of pollinator richness and evenness, will increase crop yield beyond ...
Viola, D., E. Mordecai, A. Jaramillo, S. Sistla, L
... This article contains supporting information online at www.pnas.org/lookup/suppl/doi:10. 1073/pnas.1007745107/-/DCSupplemental. ...
... This article contains supporting information online at www.pnas.org/lookup/suppl/doi:10. 1073/pnas.1007745107/-/DCSupplemental. ...
How do they get their food?
... • Benefits: How much and quality of food patch supplies: patch quality. • Costs: How much energy needed to get to patch: central place foragers this is biggie • Costs: How much energy needed to harvest food that is there. Again, not just quantity of food resource but how easy it is to get/handle, et ...
... • Benefits: How much and quality of food patch supplies: patch quality. • Costs: How much energy needed to get to patch: central place foragers this is biggie • Costs: How much energy needed to harvest food that is there. Again, not just quantity of food resource but how easy it is to get/handle, et ...
Hidden responses to environmental variation: maternal
... number, whereas maternal effects manifest through changes to seed quality, such as seed size. These differences in seed size often confer advantages in early growth, survival and competitive ability among species (Leishman 2001; Moles & Westoby 2002, 2004), and have been shown to change the fitness ...
... number, whereas maternal effects manifest through changes to seed quality, such as seed size. These differences in seed size often confer advantages in early growth, survival and competitive ability among species (Leishman 2001; Moles & Westoby 2002, 2004), and have been shown to change the fitness ...
A PRELIMINARY ECOREGION CLASSIFICATION SYSTEM FOR
... with a particular area. The assessors will score a number of biotic and habitat determinants considered to be important for the determination of ecological importance and sensitivity (Tables 1, 2 & 3) . The median of these scores will be calculated to derive the ecological importance and sensitivity ...
... with a particular area. The assessors will score a number of biotic and habitat determinants considered to be important for the determination of ecological importance and sensitivity (Tables 1, 2 & 3) . The median of these scores will be calculated to derive the ecological importance and sensitivity ...
station #1 - Scioly.org
... 1. Provide the common name for INVASIVE SPECIES #14 that caused the damage shown in the image. [1] 2. Provide the common name for INVASIVE SPECIES #15 that caused the damage shown in the image. [1] 3. In direct response to INVASIVE SPECIES #15, New York State recently updated its regulations to resp ...
... 1. Provide the common name for INVASIVE SPECIES #14 that caused the damage shown in the image. [1] 2. Provide the common name for INVASIVE SPECIES #15 that caused the damage shown in the image. [1] 3. In direct response to INVASIVE SPECIES #15, New York State recently updated its regulations to resp ...
Experimental evidence for fundamental, and not realized, niche
... Wilson 1956; Schluter 1994). When this process occurs between multiple species within a community, it is termed community-wide ECD (Strong, Szyska & Simberloff 1979). Patterns of niche partitioning can also result from other processes that do not involve interspecific competition (Schluter 1984). Ni ...
... Wilson 1956; Schluter 1994). When this process occurs between multiple species within a community, it is termed community-wide ECD (Strong, Szyska & Simberloff 1979). Patterns of niche partitioning can also result from other processes that do not involve interspecific competition (Schluter 1984). Ni ...
Single-species models for many
... Furthermore, as predicted by the theory discussed above, when specialists have shorter periods (only three cases), they are singlespecies periods rather than intermediate periods (Fig. 1b). Single-species cycles occur in a broad taxonomic range but are especially prevalent in fish (Table 1). True co ...
... Furthermore, as predicted by the theory discussed above, when specialists have shorter periods (only three cases), they are singlespecies periods rather than intermediate periods (Fig. 1b). Single-species cycles occur in a broad taxonomic range but are especially prevalent in fish (Table 1). True co ...
Ecological Concepts, Principles and Applications
... The United Nations Convention on Biological Diversity provides a similar definition for biodiversity: “the variability among living organisms from all sources including, inter alia [among other things], terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they are p ...
... The United Nations Convention on Biological Diversity provides a similar definition for biodiversity: “the variability among living organisms from all sources including, inter alia [among other things], terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they are p ...
06_3eTIF
... 6) Discuss the differences between intraspecific and interspecific competition. Answer: Intraspecific competition is the competition for limited resources by members of the same species. This is part of the process of natural selection and determines which individuals are most fit and will survive t ...
... 6) Discuss the differences between intraspecific and interspecific competition. Answer: Intraspecific competition is the competition for limited resources by members of the same species. This is part of the process of natural selection and determines which individuals are most fit and will survive t ...
CONSERVATION PLANNING IN THE GREATER ADDO NATIONAL
... predation can have a twofold effect on prey species, namely on their population dynamics and on their behaviour. It is not practical and feasible to depict spatially the processes listed in Table 1. These potentially occur throughout all Mammal Habitat Classes (MHCs) in the GANP planning domain. Som ...
... predation can have a twofold effect on prey species, namely on their population dynamics and on their behaviour. It is not practical and feasible to depict spatially the processes listed in Table 1. These potentially occur throughout all Mammal Habitat Classes (MHCs) in the GANP planning domain. Som ...
Community-wide distribution of predator–prey interaction strength in
... effects (sensu Paine; ref. 1) do not always impart such effects because of variability in their density (5, 19), and species considered weak interactors might impart stronger than expected ecological effects in cases of high density (11). Furthermore, theoretical work suggests that the removal of a ...
... effects (sensu Paine; ref. 1) do not always impart such effects because of variability in their density (5, 19), and species considered weak interactors might impart stronger than expected ecological effects in cases of high density (11). Furthermore, theoretical work suggests that the removal of a ...
Contrasts in Social Behavior between Central American Cichlid
... In contrast to the cichlids, the feeding biology of adult surgeon fishes is relatively well known, at least for the species that occur in Hawaii (Jones, 1968). The planktonic larvae are presumably carnivorous. But as soon as they settle to the reef and metamorphose, most become herbivorous. As they ...
... In contrast to the cichlids, the feeding biology of adult surgeon fishes is relatively well known, at least for the species that occur in Hawaii (Jones, 1968). The planktonic larvae are presumably carnivorous. But as soon as they settle to the reef and metamorphose, most become herbivorous. As they ...
1 Introduction
... even if a community remains in equilibrium on a large scale, species presence on a small scale changes ...
... even if a community remains in equilibrium on a large scale, species presence on a small scale changes ...