The role of behavioural variation in the invasion of
... or as a consequence of longer term selection for individuals that are better at finding mates in situations of low conspecific density, is unknown. Plastic responses might also occur as accidents of a changed environment during invasion. For example, many frog species alter both their behaviour and ...
... or as a consequence of longer term selection for individuals that are better at finding mates in situations of low conspecific density, is unknown. Plastic responses might also occur as accidents of a changed environment during invasion. For example, many frog species alter both their behaviour and ...
Brady`s Pincushion Cactus (Pediocactus bradyi)
... Kaibab limestone chips overlaying soils derived from Moenkopi shale and sandstone. It is typically found on gently sloping benches and terraces with sparse vegetation. On the Navajo Nation, population occurrences tend to be related to the abundance of limestone chips. However, some plants also occur ...
... Kaibab limestone chips overlaying soils derived from Moenkopi shale and sandstone. It is typically found on gently sloping benches and terraces with sparse vegetation. On the Navajo Nation, population occurrences tend to be related to the abundance of limestone chips. However, some plants also occur ...
Quantifying and interpreting functional diversity of natural communities
... ability to compete for light (Weiher et al. 1999, Grime 2001, Westoby et al. 2002). Consequently, interpretations of functional diversity should take into account that, depending on the availability of trait values for species, we often have access only to structural diversity and expect that it cha ...
... ability to compete for light (Weiher et al. 1999, Grime 2001, Westoby et al. 2002). Consequently, interpretations of functional diversity should take into account that, depending on the availability of trait values for species, we often have access only to structural diversity and expect that it cha ...
Cadotte2007 Ecology
... Colpidium striatum (Fig. 2d) shows significantly greater occupancy at all disturbance treatments compared to the no-disturbance control, and Tetrahymena pyriformis (Fig. 2k) is only found in extremely high disturbance treatments. ...
... Colpidium striatum (Fig. 2d) shows significantly greater occupancy at all disturbance treatments compared to the no-disturbance control, and Tetrahymena pyriformis (Fig. 2k) is only found in extremely high disturbance treatments. ...
Vanni et al 2009 - units.miamioh.edu
... that inhibit feeding or increase mortality in conspecifics. For example, individuals of the rotifer Synchaeta pectinata produce an autotoxin that reduces growth rate and increases mortality of other individuals of the same species. Autotoxin effects have also been demonstrated in a marine phytoplank ...
... that inhibit feeding or increase mortality in conspecifics. For example, individuals of the rotifer Synchaeta pectinata produce an autotoxin that reduces growth rate and increases mortality of other individuals of the same species. Autotoxin effects have also been demonstrated in a marine phytoplank ...
Nevada Wildlife Action Plan - Nevada Department of Wildlife
... implemented a highly successful transplant program since the 1980s, utilizing capture/relocation techniques supported by an aggressive water development program. Pronghorn are currently enjoying a population boom in positive response to changes in range condition that are shifting from overall shrub ...
... implemented a highly successful transplant program since the 1980s, utilizing capture/relocation techniques supported by an aggressive water development program. Pronghorn are currently enjoying a population boom in positive response to changes in range condition that are shifting from overall shrub ...
Predicting community structure of ground-foraging ant
... environments (Chesson 2000). Local abundance may also be influenced by processes occurring at the regional scale, such that the immigration of individuals from productive ‘‘source’’ populations rescue populations from local extinction in ‘‘sink’’ populations (Pulliam 1988; Leibold et al. 2004). As a ...
... environments (Chesson 2000). Local abundance may also be influenced by processes occurring at the regional scale, such that the immigration of individuals from productive ‘‘source’’ populations rescue populations from local extinction in ‘‘sink’’ populations (Pulliam 1988; Leibold et al. 2004). As a ...
quenda or southern brown bandicoot (Isoodon obesulus fusciventer)
... Scrubby, often swampy, vegetation with dense cover up to 1 m high, often feeds in adjacent forest and woodland that is burnt on a regular basis and i n areas of pasture and c ropland lying close to dense cover. Populations inhabiting Jarrah and Wandoo forests are usually associated with watercourses ...
... Scrubby, often swampy, vegetation with dense cover up to 1 m high, often feeds in adjacent forest and woodland that is burnt on a regular basis and i n areas of pasture and c ropland lying close to dense cover. Populations inhabiting Jarrah and Wandoo forests are usually associated with watercourses ...
Symbiosis and Nutrition
... benefit, this variety of symbiosis is known as mutualism. The name for a situation in which only one of the partners benefits is far more well known. Such an arrangement is known as parasitism, and a parasite is an organism that obtains nourishment or other life support from a host, usually without ...
... benefit, this variety of symbiosis is known as mutualism. The name for a situation in which only one of the partners benefits is far more well known. Such an arrangement is known as parasitism, and a parasite is an organism that obtains nourishment or other life support from a host, usually without ...
Full text in pdf format
... again. The community patterns also changed in response to the occurrence of strongly hydrodynamic episodes (such as storms), which had a higher impact than the seasonality. It was concluded that harsh physical environmental conditions reduce species richness, both spatially and temporally. With resp ...
... again. The community patterns also changed in response to the occurrence of strongly hydrodynamic episodes (such as storms), which had a higher impact than the seasonality. It was concluded that harsh physical environmental conditions reduce species richness, both spatially and temporally. With resp ...
Ecology and Evolution Affect Network Structure
... early analyses of network topology used network statistics (e.g., connectivity, nestedness) that considered only binary connections between species, that is, a presence/absence interaction matrix (but see Vazquez et al. 2007). However, an analysis of network properties based on an index of reciproca ...
... early analyses of network topology used network statistics (e.g., connectivity, nestedness) that considered only binary connections between species, that is, a presence/absence interaction matrix (but see Vazquez et al. 2007). However, an analysis of network properties based on an index of reciproca ...
An Ecological Theory for the Sudden Origin of Multicellular Life in
... good evidence that planktonic eukaryotic autotrophs were well established by 1300 million years ago, and it seems reasonable that similar benthic forms were also present, although they were clearly subordinate to blue-green algae (3, 17). As both habitat groups of autotrophs developed, they must rap ...
... good evidence that planktonic eukaryotic autotrophs were well established by 1300 million years ago, and it seems reasonable that similar benthic forms were also present, although they were clearly subordinate to blue-green algae (3, 17). As both habitat groups of autotrophs developed, they must rap ...
Biogeography and ecology: towards the integration of two disciplines
... local scales of time and space, and mostly excluded large-scale phenomena and historical explanations. In parallel, biogeography became more analytical with the acceptance of plate tectonics and the development of phylogenetic systematics, and began to pay more attention to ecological factors that i ...
... local scales of time and space, and mostly excluded large-scale phenomena and historical explanations. In parallel, biogeography became more analytical with the acceptance of plate tectonics and the development of phylogenetic systematics, and began to pay more attention to ecological factors that i ...
1 - SANParks
... post-ignition weather patterns. The maintenance of biodiversity is dependant on the development of such patterns, which allow for variation and species co-existence. Natural (lightning-driven) fire patterns can develop provided that the fire-prone islands are not “sub-divided” by development or tran ...
... post-ignition weather patterns. The maintenance of biodiversity is dependant on the development of such patterns, which allow for variation and species co-existence. Natural (lightning-driven) fire patterns can develop provided that the fire-prone islands are not “sub-divided” by development or tran ...
3 - Heartland Community College
... • A. average # of offspring carried to term by a species • B. greatest # of different niches possible in a given area • C. potential growth in the number of species in an area • D. maximum population size that a given environment ...
... • A. average # of offspring carried to term by a species • B. greatest # of different niches possible in a given area • C. potential growth in the number of species in an area • D. maximum population size that a given environment ...
Challenges and Opportunities for Conserving Some Threatened
... The workshop provided an opportunity to update participants on numbers and distribution of Grevy’s zebra in Kenya, as well as incorporate the inputs and views of stakeholders. Activities, indicators, and timelines were outlined against each strategic objective. Timelines for implementing the strateg ...
... The workshop provided an opportunity to update participants on numbers and distribution of Grevy’s zebra in Kenya, as well as incorporate the inputs and views of stakeholders. Activities, indicators, and timelines were outlined against each strategic objective. Timelines for implementing the strateg ...
Chapter 4
... - Allelopathy = certain plants release harmful chemicals - Or, is this a way to outcompete another for space? • Commensalism = a relationship in which one organism benefits, while the other remains unaffected ...
... - Allelopathy = certain plants release harmful chemicals - Or, is this a way to outcompete another for space? • Commensalism = a relationship in which one organism benefits, while the other remains unaffected ...
Paper-6.1-Landings-Obligation-Vision
... The EU is obliged by international agreements to maintain or restore fish stocks to maximum sustainable yield; MSY. However, there can be no single value for MSY in an ecosystem context, and there is a need to decide what is to be preferred. Reaching biomass targets, as some have suggested, is inapp ...
... The EU is obliged by international agreements to maintain or restore fish stocks to maximum sustainable yield; MSY. However, there can be no single value for MSY in an ecosystem context, and there is a need to decide what is to be preferred. Reaching biomass targets, as some have suggested, is inapp ...
Apparent predation risk: tests of habitat selection theory reveal
... competition would reveal less use of the risky patch with every reduction in the density of competitors. The increased cost of predation in the presence of competitors is real, but could not be attributed to either an increase in predator numbers or predator behaviour. I refer to such cases as ‘appa ...
... competition would reveal less use of the risky patch with every reduction in the density of competitors. The increased cost of predation in the presence of competitors is real, but could not be attributed to either an increase in predator numbers or predator behaviour. I refer to such cases as ‘appa ...
When can two plant species facilitate each other`s pollination?
... T. S. Feldman, W. F. Morris and W. G. Wilson, Biology Dept, Duke Univ., Durham, NC 27708, USA([email protected]). ...
... T. S. Feldman, W. F. Morris and W. G. Wilson, Biology Dept, Duke Univ., Durham, NC 27708, USA([email protected]). ...
Cryptic species, cryptic endosymbionts, and geographical variation
... 1208 T A M A R A M . M C G O V E R N and M I C H A E L E . H E L L B E R G and with their environments in different ways (Haylor et al. 1984; Knowlton et al. 1992; Mokady & Brickner 2001), and by definition have independent population dynamics. Ecological differences that previously might have been ...
... 1208 T A M A R A M . M C G O V E R N and M I C H A E L E . H E L L B E R G and with their environments in different ways (Haylor et al. 1984; Knowlton et al. 1992; Mokady & Brickner 2001), and by definition have independent population dynamics. Ecological differences that previously might have been ...
PROTHONOTARY WARBLERS AS INDICATORS OF
... assessment over a wide range and intensity of degradation, and being cost-effective to monitor and relatively easy to study. In addition, an indicator species may be particularly useful if it is emblematic of, or strongly associated with, a particular habitat, tightly linked to ecosystem processes, ...
... assessment over a wide range and intensity of degradation, and being cost-effective to monitor and relatively easy to study. In addition, an indicator species may be particularly useful if it is emblematic of, or strongly associated with, a particular habitat, tightly linked to ecosystem processes, ...
Limitations on reproductive success in endemic Aquilegia
... counted the flower number at the first visit (including flower buds larger than 1 cm). During the rest of the experiment, each flower producing a normally developed fruit was recorded, to calculate the fruit/flower ratio. At the end of fruit maturation, three to five ripe fruits were randomly harvested on ...
... counted the flower number at the first visit (including flower buds larger than 1 cm). During the rest of the experiment, each flower producing a normally developed fruit was recorded, to calculate the fruit/flower ratio. At the end of fruit maturation, three to five ripe fruits were randomly harvested on ...
View or download Discussion and literature cited
... be limiting, is highly variable among the planted species. Monitoring was not done frequently enough to correlate extended dry periods with pulses of mortality. For example, it is tempting to speculate that the El Niño drought of early 2010 may be a factor in the high mortality observed with many sp ...
... be limiting, is highly variable among the planted species. Monitoring was not done frequently enough to correlate extended dry periods with pulses of mortality. For example, it is tempting to speculate that the El Niño drought of early 2010 may be a factor in the high mortality observed with many sp ...
Biodiversity action plan
This article is about a conservation biology topic. For other uses of BAP, see BAP (disambiguation).A biodiversity action plan (BAP) is an internationally recognized program addressing threatened species and habitats and is designed to protect and restore biological systems. The original impetus for these plans derives from the 1992 Convention on Biological Diversity (CBD). As of 2009, 191 countries have ratified the CBD, but only a fraction of these have developed substantive BAP documents.The principal elements of a BAP typically include: (a) preparing inventories of biological information for selected species or habitats; (b) assessing the conservation status of species within specified ecosystems; (c) creation of targets for conservation and restoration; and (d) establishing budgets, timelines and institutional partnerships for implementing the BAP.