FRAMEWORK FOR CHARACTERIZING CONSERVATION UNITS
... following six years of discussion, consultation, review, and revision (DFO 2005). The WSP is one of several policies whose provenance was the New Directions discussion paper (DFO 1998). The goal of the WSP is to “restore and maintain healthy and diverse salmon populations and their habitats for the ...
... following six years of discussion, consultation, review, and revision (DFO 2005). The WSP is one of several policies whose provenance was the New Directions discussion paper (DFO 1998). The goal of the WSP is to “restore and maintain healthy and diverse salmon populations and their habitats for the ...
Global networks for invasion science: benefits, challenges and
... 2006). The current distribution of most invasive organisms, in both their native and introduced ranges, spans two or more continents but rarely covers the entire globe (cf. Rejmánek and Richardson 2013). Limiting the selection of focal taxa to those that have a large global range would focus resear ...
... 2006). The current distribution of most invasive organisms, in both their native and introduced ranges, spans two or more continents but rarely covers the entire globe (cf. Rejmánek and Richardson 2013). Limiting the selection of focal taxa to those that have a large global range would focus resear ...
Food webs, landscapes and natural enemy efficacy in organic
... Limiting factors on spider predation: Cannibalism Interference competition Intraguild predation Exploitative competition ...
... Limiting factors on spider predation: Cannibalism Interference competition Intraguild predation Exploitative competition ...
Woylie declines: what are the causes?
... losses within two to five years with few or no signs of a subsequent recovery. There are now less than 2000 individuals estimated remaining within the last four indigenous populations (Perup, Greater Kingston, Dryandra and Tutanning), which despite the low numbers still support high levels of geneti ...
... losses within two to five years with few or no signs of a subsequent recovery. There are now less than 2000 individuals estimated remaining within the last four indigenous populations (Perup, Greater Kingston, Dryandra and Tutanning), which despite the low numbers still support high levels of geneti ...
Dispersal and ranging patterns of the Asian Elephant (Elephas
... severity of their adverse interactions with humans in South Asia. The Asian elephant is distributed in many types of habitats throughout its range, which spans across 13 countries (Alfred et al. 2012; WWF 2013). The distribution of elephant is widely influenced by the distribution and seasonality of ...
... severity of their adverse interactions with humans in South Asia. The Asian elephant is distributed in many types of habitats throughout its range, which spans across 13 countries (Alfred et al. 2012; WWF 2013). The distribution of elephant is widely influenced by the distribution and seasonality of ...
Biology and Ecology of Juvenile Procambarus alleni and
... environments. Studies of water depth, hydroperiod, and water quality are also needed, to understand how P. alleni and P. fallax can coexist, on a microhabitat level. Little is known about tolerances of either species to water quality factors such as oxygen, temperature, salinity, turbidity, or pH fo ...
... environments. Studies of water depth, hydroperiod, and water quality are also needed, to understand how P. alleni and P. fallax can coexist, on a microhabitat level. Little is known about tolerances of either species to water quality factors such as oxygen, temperature, salinity, turbidity, or pH fo ...
Shoreline Identification Guide - Essex Wildlife Trust Biological
... Littorina shells for smaller animals; crab up to 10cm long; carapace up to 4cm with sharp pointed rostrum between the eyes. ...
... Littorina shells for smaller animals; crab up to 10cm long; carapace up to 4cm with sharp pointed rostrum between the eyes. ...
Conserving Biodiversity Through Sustainable Forestry
... includes topics that the Commission members have identified as important elements of forest biodiversity. Some serious gaps in scientific knowledge about many of these topics have been filled by NCSSF-sponsored research projects that produced new scientific findings and practical tools for applying ...
... includes topics that the Commission members have identified as important elements of forest biodiversity. Some serious gaps in scientific knowledge about many of these topics have been filled by NCSSF-sponsored research projects that produced new scientific findings and practical tools for applying ...
Toward an old-growth concept for grasslands, savannas, and
... in old-growth forests (eg large diameter trees, accumulated woody debris; Franklin and Spies 1991) are inapplicable to grasslands. Frequent fires and herbivory are essential to the persistence of most old-growth grasslands, especially where precipitation and soil nutrient availability are sufficient ...
... in old-growth forests (eg large diameter trees, accumulated woody debris; Franklin and Spies 1991) are inapplicable to grasslands. Frequent fires and herbivory are essential to the persistence of most old-growth grasslands, especially where precipitation and soil nutrient availability are sufficient ...
Ecosystem Health of Large Lakes - Great Lakes Fishery Commission
... its emphasis on the patient and only secondarily considers illness as an expression of the patient’s environment. These approaches are not necessarily in conflict, and may only indicate the newness of the ecosystem health concept and our ability to objectify and measure it. But all three approaches ...
... its emphasis on the patient and only secondarily considers illness as an expression of the patient’s environment. These approaches are not necessarily in conflict, and may only indicate the newness of the ecosystem health concept and our ability to objectify and measure it. But all three approaches ...
Competitive interactions across a soil fertility gradient in a
... biomass production (Trinder et al. 2012). These short-term experiments, however, provide little direct insight into the outcomes of competition across soil fertility gradients in longlived multispecies forests. In contrast, neighbourhood studies of multispecies forests incorporate another methodolog ...
... biomass production (Trinder et al. 2012). These short-term experiments, however, provide little direct insight into the outcomes of competition across soil fertility gradients in longlived multispecies forests. In contrast, neighbourhood studies of multispecies forests incorporate another methodolog ...
Johnson and Thieltges 2010
... vector-borne microparasites, limiting our understanding of when and for what other types of disease systems we might expect a dilution effect to occur. Moreover, despite the growing number of empirical examples supporting a negative relationship between community diversity and disease risk, the corr ...
... vector-borne microparasites, limiting our understanding of when and for what other types of disease systems we might expect a dilution effect to occur. Moreover, despite the growing number of empirical examples supporting a negative relationship between community diversity and disease risk, the corr ...
Journal of Chemical Ecology
... Neuch^atel, Switzerland), ‘We are finally accepting that microorganisms are essential contributors to all possible interactions and it will become increasingly clear that this is also the case for volatile mediated interactions’. It appears likely that this aspect is a severely understudied area wit ...
... Neuch^atel, Switzerland), ‘We are finally accepting that microorganisms are essential contributors to all possible interactions and it will become increasingly clear that this is also the case for volatile mediated interactions’. It appears likely that this aspect is a severely understudied area wit ...
Habitat preferences and stocking densities of Bontebok in the
... al. 1994). It differs from Bayesian statistics mainly in the following areas: 1) Because of uncertainty, the subjective probability (belief) of a proposition A and the probability of its compliment A’, need not have the Bayesian relationship A= 1- A’; 2) the probability P(B) used to update a present ...
... al. 1994). It differs from Bayesian statistics mainly in the following areas: 1) Because of uncertainty, the subjective probability (belief) of a proposition A and the probability of its compliment A’, need not have the Bayesian relationship A= 1- A’; 2) the probability P(B) used to update a present ...
SPOTTED HYAENA SURVIVAL AND DENSITY IN A LION
... Competition is considered an important factor for large carnivore population dynamics, but the manner in which interspecific competition impacts these species are not well understood. This lack of knowledge is due to the ongoing declines of large carnivores, the loss of intact large carnivore gui ...
... Competition is considered an important factor for large carnivore population dynamics, but the manner in which interspecific competition impacts these species are not well understood. This lack of knowledge is due to the ongoing declines of large carnivores, the loss of intact large carnivore gui ...
Beavers and biodiversity: the ethics of ecological restoration
... defined ecosystem to recovering ecological integrity: “Ecological restoration is the process of assisting the recovery and management of ecological integrity. Ecological integrity includes a critical range of variability in biodiversity, ecological processes and structures, regional and historical c ...
... defined ecosystem to recovering ecological integrity: “Ecological restoration is the process of assisting the recovery and management of ecological integrity. Ecological integrity includes a critical range of variability in biodiversity, ecological processes and structures, regional and historical c ...
Plant species loss decreases arthropod diversity and shifts trophic structure
... individuals, and, concomitantly, the number of consumer species (the More Individuals Hypothesis, Srivastava & Lawton 1998). Third, and in contrast to the More Individuals Hypothesis, the Resource Concentration Hypothesis predicts that specialist herbivores are attracted to and remain on high concen ...
... individuals, and, concomitantly, the number of consumer species (the More Individuals Hypothesis, Srivastava & Lawton 1998). Third, and in contrast to the More Individuals Hypothesis, the Resource Concentration Hypothesis predicts that specialist herbivores are attracted to and remain on high concen ...
Marker, L. (2005). Cheetah conservation in Namibia. Animal
... In Namibia, cheetahs have long been persecuted due to conflict with local farmers, and the population has suffered high levels of “off take” as a result, with 6,829 wild cheetahs reported killed or placed in captivity during the 1980s alone (CITES, 1992; Marker-Kraus et al., 1996). Understanding the ...
... In Namibia, cheetahs have long been persecuted due to conflict with local farmers, and the population has suffered high levels of “off take” as a result, with 6,829 wild cheetahs reported killed or placed in captivity during the 1980s alone (CITES, 1992; Marker-Kraus et al., 1996). Understanding the ...
Cascading top-down effects of changing oceanic predator
... 1. Top-down control can be an important determinant of ecosystem structure and function, but in oceanic ecosystems, where cascading effects of predator depletions, recoveries, and invasions could be significant, such effects had rarely been demonstrated until recently. 2. Here we synthesize the evid ...
... 1. Top-down control can be an important determinant of ecosystem structure and function, but in oceanic ecosystems, where cascading effects of predator depletions, recoveries, and invasions could be significant, such effects had rarely been demonstrated until recently. 2. Here we synthesize the evid ...
English version
... consumption in the country while hydropower contributes about 37% of power supply in the country. The average Total Economic Value (TEV) of catchment forest reserves was established to be more than 17,250 USD/ha. On the other hand, tourism industry is now worth over US$1 billion annually. Ecosystem ...
... consumption in the country while hydropower contributes about 37% of power supply in the country. The average Total Economic Value (TEV) of catchment forest reserves was established to be more than 17,250 USD/ha. On the other hand, tourism industry is now worth over US$1 billion annually. Ecosystem ...
The scope of the problem - Assets
... nutrient supply enhanced. The critical question is what proportion of seeds needs to be eaten by ants before such a relationship shifts to a negative/ predatory relationship? Alternatively, one may ask how many seeds must be positively affected by ants in particular environments for dispersal by ant ...
... nutrient supply enhanced. The critical question is what proportion of seeds needs to be eaten by ants before such a relationship shifts to a negative/ predatory relationship? Alternatively, one may ask how many seeds must be positively affected by ants in particular environments for dispersal by ant ...
from wsl.ch
... Increasing biodiversity loss due to climate change is one of the most vital challenges of the 21st century. To anticipate and mitigate biodiversity loss, models are needed that reliably project species’ range dynamics and extinction risks. Recently, several new approaches to model range dynamics hav ...
... Increasing biodiversity loss due to climate change is one of the most vital challenges of the 21st century. To anticipate and mitigate biodiversity loss, models are needed that reliably project species’ range dynamics and extinction risks. Recently, several new approaches to model range dynamics hav ...
Refuge effects of Juncus effusus in grazed, subtropical wetland plant
... grazed ecosystems, biotic refuges are stress-tolerant increasers, while the species they protect are usually competitive decreasers (Fig. 1); ruderal species likely do not benefit from facilitation due to sensitivity to competition (Michalet et al. 2006). The presence of herbivores can alter interac ...
... grazed ecosystems, biotic refuges are stress-tolerant increasers, while the species they protect are usually competitive decreasers (Fig. 1); ruderal species likely do not benefit from facilitation due to sensitivity to competition (Michalet et al. 2006). The presence of herbivores can alter interac ...
Thrall, P. H., M. E. Hochberg, J. J. Burdon and J. D. Bever. 2007
... diversity increases, there should be a corresponding shift in host strategy from one of defence (resistance) towards tolerance. In part, this is because increased unpredictability of the interaction is linked to lower effectiveness of more specific defence responses [36], but it could also relate to ...
... diversity increases, there should be a corresponding shift in host strategy from one of defence (resistance) towards tolerance. In part, this is because increased unpredictability of the interaction is linked to lower effectiveness of more specific defence responses [36], but it could also relate to ...
Biological Dynamics of Forest Fragments Project
The Biological Dynamics of Forest Fragments Project, originally called the Minimum Critical Size of Ecosystems Project is a large-scale ecological experiment looking at the effects of habitat fragmentation on tropical rainforest; it is one of the most expensive biology experiments ever run. The experiment, which was established in 1979 is located near Manaus, in the Brazilian Amazon. The project is jointly managed by the Smithsonian Institution and INPA, the Brazilian Institute for Research in the Amazon.The project was initiated in 1979 by Thomas Lovejoy to investigate the SLOSS debate. Initially named the Minimum Critical Size of Ecosystems Project, the project created forest fragments of sizes 1 hectare (2 acres), 10 hectares (25 acres), and 100 hectares (247 acres). Data were collected prior to the creation of the fragments and studies of the effects of fragmentation now exceed 25 years.As of October 2010 562 publications and 143 graduate dissertations and theses had emerged from the project.