Species interaction mechanisms maintain grassland
... overyield when interspecific interactions are less detrimental or more favorable than intraspecific interactions. That is, a species overyields when there is less competition or when there are more positive interactions in mixture than in monoculture. Vandermeer (1981) showed that the general Lotka-Vo ...
... overyield when interspecific interactions are less detrimental or more favorable than intraspecific interactions. That is, a species overyields when there is less competition or when there are more positive interactions in mixture than in monoculture. Vandermeer (1981) showed that the general Lotka-Vo ...
Los Angeles Mission College Facilities Master Plan 3.3 B R
... This section summarizes the sensitive local, State, and federally recognized plant and wildlife species present, or potentially occurring, within the project site and vicinity. It is primarily based on an evaluation of the habitats present within the project site and the suitability of the habitats ...
... This section summarizes the sensitive local, State, and federally recognized plant and wildlife species present, or potentially occurring, within the project site and vicinity. It is primarily based on an evaluation of the habitats present within the project site and the suitability of the habitats ...
as a PDF
... with long-term protection from disturbance (Fynn 2004). Eragrostis curvula (Schrad.) is a relatively tall, narrow-leaved and strongly tufted species that invades and dominates grassland fertilized with nitrogen (Fynn 2004) and increases in abundance in grassland that is burnt or mown only infrequent ...
... with long-term protection from disturbance (Fynn 2004). Eragrostis curvula (Schrad.) is a relatively tall, narrow-leaved and strongly tufted species that invades and dominates grassland fertilized with nitrogen (Fynn 2004) and increases in abundance in grassland that is burnt or mown only infrequent ...
White-capped Albatross - Agreement on the Conservation of
... present in the area could in fact be T. steadi [41]. The pelagic fishing fleets of Japan, Taiwan and Korea are also known to kill significant numbers of ‘shy-type’ albatrosses, but reliable estimates are not available. Observer coverage in these and most other fisheries are currently either non-exis ...
... present in the area could in fact be T. steadi [41]. The pelagic fishing fleets of Japan, Taiwan and Korea are also known to kill significant numbers of ‘shy-type’ albatrosses, but reliable estimates are not available. Observer coverage in these and most other fisheries are currently either non-exis ...
TEAM 2 QUEST 06 PAPER
... the Intermediate Disturbance Hypothesis (Hughes and Connell 1999) to be supported through the analysis of coral and algal species composition. Wave action is a physical disturbance that presumeably varies among depths at Ke’ei. Wave action is likely to be highest on the reef flat (15 ft), lowest at ...
... the Intermediate Disturbance Hypothesis (Hughes and Connell 1999) to be supported through the analysis of coral and algal species composition. Wave action is a physical disturbance that presumeably varies among depths at Ke’ei. Wave action is likely to be highest on the reef flat (15 ft), lowest at ...
Lab handout - People Server at UNCW
... encompasses organisms that can move through the interstices of sediment, fitting between grains without having to move the sediment grains out of their path. Meiofauna can be extremely abundant: one million animals may live in one square meter of sand. High abundance and rapid growth rates suggest t ...
... encompasses organisms that can move through the interstices of sediment, fitting between grains without having to move the sediment grains out of their path. Meiofauna can be extremely abundant: one million animals may live in one square meter of sand. High abundance and rapid growth rates suggest t ...
Effects of density and ontogeny on size and growth
... 1. Rank reversals in species performance are theoretically important for structuring communities, maintaining diversity and determining the course of forest succession. Species growth ranks can change with ontogeny or in different microenvironments, but interactions between ontogeny and the environm ...
... 1. Rank reversals in species performance are theoretically important for structuring communities, maintaining diversity and determining the course of forest succession. Species growth ranks can change with ontogeny or in different microenvironments, but interactions between ontogeny and the environm ...
Using standardized sampling designs from population ecology to
... reproduction as well as for sampling individuals for autecological experiments and genetic analysis. One might argue that studying vegetation diversity on these plots which had been selected from the perspective of population ecology cannot be more than a byproduct. On the contrary, we consider this ...
... reproduction as well as for sampling individuals for autecological experiments and genetic analysis. One might argue that studying vegetation diversity on these plots which had been selected from the perspective of population ecology cannot be more than a byproduct. On the contrary, we consider this ...
21 | CONSERVATION AND BIODIVERSITY
... age of the ecosystems in the tropics versus temperate regions, which were largely devoid of life or drastically impoverished during the last ice age. The greater age provides more time for speciation. Another possible explanation is the greater energy the tropics receive from the sun versus the less ...
... age of the ecosystems in the tropics versus temperate regions, which were largely devoid of life or drastically impoverished during the last ice age. The greater age provides more time for speciation. Another possible explanation is the greater energy the tropics receive from the sun versus the less ...
Patterns in the structure of Asian and North American desert small
... but the mechanism underlying this structure appears different in North American and Asia. In North America, simulations strongly implicate interspecific competition as a dominant mechanism influencing community and assemblage structure. In contrast, data from Asian desert rodent communities suggest ...
... but the mechanism underlying this structure appears different in North American and Asia. In North America, simulations strongly implicate interspecific competition as a dominant mechanism influencing community and assemblage structure. In contrast, data from Asian desert rodent communities suggest ...
- Wiley Online Library
... ecology. In particular, we now have the capacity in some systems to rapidly identify thousands of species-level interactions using non-invasive methods based on the detection of trace DNA. This represents a powerful tool for conservation biology, for example allowing the identification of species wi ...
... ecology. In particular, we now have the capacity in some systems to rapidly identify thousands of species-level interactions using non-invasive methods based on the detection of trace DNA. This represents a powerful tool for conservation biology, for example allowing the identification of species wi ...
Effects of Garden Attributes on Ant (Formicidae) Species Richness
... The decline is attributed to reduced soil moisture, removal of biomass, and compaction, and tilling is associated with exaggerated rates of erosion and labor costs (Peck et al., 1998; Altieri, 1999; Pimentel et al., 2012). Thus, examining the extent and severity of different tilling methods on biodi ...
... The decline is attributed to reduced soil moisture, removal of biomass, and compaction, and tilling is associated with exaggerated rates of erosion and labor costs (Peck et al., 1998; Altieri, 1999; Pimentel et al., 2012). Thus, examining the extent and severity of different tilling methods on biodi ...
chapter 9 biological invasions and the homogenization of faunas
... however, the large majority of species are not distributed broadly, because individuals of most species have limited dispersal capabilities. These limitations on dispersal ability have produced the interesting phenomenon that many, perhaps even most, species do not occupy all of the areas of the wor ...
... however, the large majority of species are not distributed broadly, because individuals of most species have limited dispersal capabilities. These limitations on dispersal ability have produced the interesting phenomenon that many, perhaps even most, species do not occupy all of the areas of the wor ...
Local diversity reduces infection risk across multiple
... population size achieved by the parasite at the post-cercarial stage (numbers of metacercariae per unit surface area). We split local biodiversity into four separate components, to recognise the different mechanisms by which the ambient fauna can affect transmission (Thieltges et al., 2008a). First, ...
... population size achieved by the parasite at the post-cercarial stage (numbers of metacercariae per unit surface area). We split local biodiversity into four separate components, to recognise the different mechanisms by which the ambient fauna can affect transmission (Thieltges et al., 2008a). First, ...
Population Viability Analysis Annual Review of Ecology and
... deterministic and stochastic processes in ecology is artificial because all ecological processes are stochastic. Maynard Smith (97) points out that "the use of deterministic rather than stochastic models can only be justified by mathematical convenience." For heuristic purposes, use of deterministic ...
... deterministic and stochastic processes in ecology is artificial because all ecological processes are stochastic. Maynard Smith (97) points out that "the use of deterministic rather than stochastic models can only be justified by mathematical convenience." For heuristic purposes, use of deterministic ...
Habitat and habitat selection: theory, tests, and implications.
... those phenomenological models seldom include mechanisms of habitat occupancy that generate spatial and temporal variation in fitness and migration. The role of migration is explicit, however, in metapopulation models that integrate space and time into a more comprehensive understanding of population ...
... those phenomenological models seldom include mechanisms of habitat occupancy that generate spatial and temporal variation in fitness and migration. The role of migration is explicit, however, in metapopulation models that integrate space and time into a more comprehensive understanding of population ...
Appendix 1. Revision of the questions on the environmental impact
... In this question we rate the current environmental impact in other invaded regions that can be used as indicator for determining the potential environmental impact in the PRA area (Q6.09). If the species has not invaded any other area, or if the invasion is too recent and too little is known about i ...
... In this question we rate the current environmental impact in other invaded regions that can be used as indicator for determining the potential environmental impact in the PRA area (Q6.09). If the species has not invaded any other area, or if the invasion is too recent and too little is known about i ...
The Influence of Interspecific Competition and Other Factors on the
... termingled with Clltlzal~zalltsfor a short distance. a stretch of shore about 50 ft long. TVhen 8 Balanlts settles on the shore in *\pril and May, patches had been found, no more were looked often in very dense concentrations (see Table for. T h e onlj basis for reject1011 of an area in ...
... termingled with Clltlzal~zalltsfor a short distance. a stretch of shore about 50 ft long. TVhen 8 Balanlts settles on the shore in *\pril and May, patches had been found, no more were looked often in very dense concentrations (see Table for. T h e onlj basis for reject1011 of an area in ...
Definitions
... relative frequency. For biological diversity these items are organized at many levels …. Thus the term biodiversity encompasses different ecosystems, species, genes and their relative abundance. (US Congress, Office of Technology Assessment, 1987). ...
... relative frequency. For biological diversity these items are organized at many levels …. Thus the term biodiversity encompasses different ecosystems, species, genes and their relative abundance. (US Congress, Office of Technology Assessment, 1987). ...
APPENDIX C: The Conservation and Reservation status of
... With these problems in mind, this study assesses the conservation and reservation status of Tasmanian bryophytes. The conservation status categories which have been assigned to each species are very much preliminary as more information is required to correctly assess their status. As a consequence, ...
... With these problems in mind, this study assesses the conservation and reservation status of Tasmanian bryophytes. The conservation status categories which have been assigned to each species are very much preliminary as more information is required to correctly assess their status. As a consequence, ...
Habitat Selection
... Habitat Selection • Other kinds of organisms appear to make similar ontogenetic shifts in habitat use that depend on the presence of predators. • Although the costs of predator avoidance seem slight, Morin (1986) observed that tadpoles of the spring peeper spent the first 2 weeks after hatching hid ...
... Habitat Selection • Other kinds of organisms appear to make similar ontogenetic shifts in habitat use that depend on the presence of predators. • Although the costs of predator avoidance seem slight, Morin (1986) observed that tadpoles of the spring peeper spent the first 2 weeks after hatching hid ...
How Wild is Vild Campus - Det Natur
... When establishing urban nature, it is usually done with the purpose of raising the biodiversity in the city. The Vild Campus initiative, a part of the Center for Macro ecology, Evolution and Climate at Copenhagen University, created five biotopes with four different types of native habitat, a meadow ...
... When establishing urban nature, it is usually done with the purpose of raising the biodiversity in the city. The Vild Campus initiative, a part of the Center for Macro ecology, Evolution and Climate at Copenhagen University, created five biotopes with four different types of native habitat, a meadow ...
Rivers and Wetlands: A Common Assessment Approach
... Compatibility • Costs, Benefits, and Cost-Effectiveness ...
... Compatibility • Costs, Benefits, and Cost-Effectiveness ...
Growth, regeneration and predation in three species of large coral
... the whole body contour of an individual sponge. Zero growth rates and even negative values (shrinkage) were found at intervals for some points on individuals of all 3 species. There was no apparent pattern in this variation, but overall size of the sponges did increase. Mean horizontal and vertical ...
... the whole body contour of an individual sponge. Zero growth rates and even negative values (shrinkage) were found at intervals for some points on individuals of all 3 species. There was no apparent pattern in this variation, but overall size of the sponges did increase. Mean horizontal and vertical ...