Balanced harvesting in fisheries: a preliminary analysis of
... Balanced harvesting in fisheries 2014). As a consequence, conservation and, where appropriate, restoration of these interactions and processes appears of greater significance for the long-term maintenance of biological diversity than simply protection of species (UNEP/CBD, 1998; FAO, 2003a). This f ...
... Balanced harvesting in fisheries 2014). As a consequence, conservation and, where appropriate, restoration of these interactions and processes appears of greater significance for the long-term maintenance of biological diversity than simply protection of species (UNEP/CBD, 1998; FAO, 2003a). This f ...
Ch11 Lecture 1.competition
... into surrounding soils, which has been shown to reduce germination and growth of native grasses. Cattle do not eat spotted knapweed, giving it an edge over native plants that cattle do eat. ...
... into surrounding soils, which has been shown to reduce germination and growth of native grasses. Cattle do not eat spotted knapweed, giving it an edge over native plants that cattle do eat. ...
Local-regional relationships and the geographical distribution of
... performed, measuring the actual number of species that co-occur in the localities, that is, the local inventory diversity (LID). These LID values would be equal to or less than the corresponding RPD, so in that sense, the sets of species quantified by the RPD constitute a pool of species from which ...
... performed, measuring the actual number of species that co-occur in the localities, that is, the local inventory diversity (LID). These LID values would be equal to or less than the corresponding RPD, so in that sense, the sets of species quantified by the RPD constitute a pool of species from which ...
Ch. 37 Presentation
... 37.13 Invasive species can devastate communities Invasive species – are organisms that have been introduced into non-native habitats by human actions and – have established themselves at the expense of native communities. – The absence of natural enemies often allows rapid population growth of in ...
... 37.13 Invasive species can devastate communities Invasive species – are organisms that have been introduced into non-native habitats by human actions and – have established themselves at the expense of native communities. – The absence of natural enemies often allows rapid population growth of in ...
- Wiley Online Library
... Ultimately, then, while landscape change is expected to lead to greater population isolation for most species, some species may actually experience increased gene flow between populations as a result of human modifications of the landscape. These species are generally expected to be those that have cl ...
... Ultimately, then, while landscape change is expected to lead to greater population isolation for most species, some species may actually experience increased gene flow between populations as a result of human modifications of the landscape. These species are generally expected to be those that have cl ...
ecology quiz - HIS IB Biology 2011-2013
... The total solar energy received by a grassland is 5 × l05 kJ m–2 y–1. The net production of the grassland is 5 × 102 kJ m–2 y–1 and its gross production is 6 × l02 kJ m–2 y–1. The total energy passed on to primary consumers is 60 kJ m–2 y–1. Only 10 % of this energy is passed on to the secondary con ...
... The total solar energy received by a grassland is 5 × l05 kJ m–2 y–1. The net production of the grassland is 5 × 102 kJ m–2 y–1 and its gross production is 6 × l02 kJ m–2 y–1. The total energy passed on to primary consumers is 60 kJ m–2 y–1. Only 10 % of this energy is passed on to the secondary con ...
Word Document
... A total of 107 observations of Atelopus varius have been logged since January of 2005, representing 26 unique individuals. Each individual toad is recognized based on a unique color pattern which is recorded in a population database. Although age-related color changes have been observed in individua ...
... A total of 107 observations of Atelopus varius have been logged since January of 2005, representing 26 unique individuals. Each individual toad is recognized based on a unique color pattern which is recorded in a population database. Although age-related color changes have been observed in individua ...
Round 2 for Butterflies - Conserve Wildlife Foundation
... Recent surveys conducted in NY in the Susquehanna and Delaware drainages show a significant reduction of locations they are currently present compared to the historical record for the species. I have no experience with this species. However, previous comments that highlight its narrow distribution i ...
... Recent surveys conducted in NY in the Susquehanna and Delaware drainages show a significant reduction of locations they are currently present compared to the historical record for the species. I have no experience with this species. However, previous comments that highlight its narrow distribution i ...
Threatened Species Lists - Friends of the Brush-tailed Rock
... Heavy and sustained grazing pressure by livestock and trampling of habitat can be a threat to the northern population through loss of structure and density of tussock grasses. ...
... Heavy and sustained grazing pressure by livestock and trampling of habitat can be a threat to the northern population through loss of structure and density of tussock grasses. ...
Species Fact Sheets
... Implementation Committee (WA SIC) for the Sustainable Forestry Initiative (SFI) is pleased to provide a series of factsheets on species of special concern that may occur on forested lands within Washington State. Each species factsheet includes a description of the species, habitat, range, and infor ...
... Implementation Committee (WA SIC) for the Sustainable Forestry Initiative (SFI) is pleased to provide a series of factsheets on species of special concern that may occur on forested lands within Washington State. Each species factsheet includes a description of the species, habitat, range, and infor ...
SNA Project Report Pages 69-82 Summary of Ecological Results
... Domestic stock (sheep, cattle, deer, horses, goats, etc) in general destroy native vegetation and undergrowth - particularly in forest and wetland sites - and prevent regeneration. They also favour certain plant species over others as food and therefore considerably modify the composition of the veg ...
... Domestic stock (sheep, cattle, deer, horses, goats, etc) in general destroy native vegetation and undergrowth - particularly in forest and wetland sites - and prevent regeneration. They also favour certain plant species over others as food and therefore considerably modify the composition of the veg ...
of the competition kernel a(x)
... Some history • Why are organisms apportioned into clusters separated by gaps? (Coyne and Orr 2005) – "The manifest tendency of life toward formation of discrete arrays is not deducible from any a priori considerations. It is simply a fact to be reckoned with." (Dobzhansky 1935) – "Homage to Santa R ...
... Some history • Why are organisms apportioned into clusters separated by gaps? (Coyne and Orr 2005) – "The manifest tendency of life toward formation of discrete arrays is not deducible from any a priori considerations. It is simply a fact to be reckoned with." (Dobzhansky 1935) – "Homage to Santa R ...
- WIT Repository
... expected from monoculture performance and frequently exceeded the yield of the ...
... expected from monoculture performance and frequently exceeded the yield of the ...
Competition theory and the structure of ecological
... where Ni is adult density and Ri is the set of resources used by competitor i for reproduction and survival through the function 1], which is unity in the limit of abundant resources, ai(Ni) regulates reproduction and mortality in a manner independent of competitors and is unity when no such regulat ...
... where Ni is adult density and Ri is the set of resources used by competitor i for reproduction and survival through the function 1], which is unity in the limit of abundant resources, ai(Ni) regulates reproduction and mortality in a manner independent of competitors and is unity when no such regulat ...
The rich invertebrate community in tropical epiphytes: a survey of the
... assemblages of organisms (Forster et al., 2004). As part of the forest vegetation there is also a wide range of plant forms that reach up into the canopy vicariously; they either climb and then scramble in the tree canopy (vines and lianas) or grow as epiphytes (Begon et al., 2006). Epiphytes are an ...
... assemblages of organisms (Forster et al., 2004). As part of the forest vegetation there is also a wide range of plant forms that reach up into the canopy vicariously; they either climb and then scramble in the tree canopy (vines and lianas) or grow as epiphytes (Begon et al., 2006). Epiphytes are an ...
Low biodiversity state persists two decades after cessation of nutrient enrichment
... tion: 0, 10, 20, 34, 54, 95, 170 or 270 kg N ha!1 year!1 from 1982 to 2011 (Clark & Tilman 2008). To ensure primary limitation by N availability, plots also received P, K, Ca, Mg and trace metals, none of which are limiting (Tilman 1987). There were also unamended control plots that received no nutr ...
... tion: 0, 10, 20, 34, 54, 95, 170 or 270 kg N ha!1 year!1 from 1982 to 2011 (Clark & Tilman 2008). To ensure primary limitation by N availability, plots also received P, K, Ca, Mg and trace metals, none of which are limiting (Tilman 1987). There were also unamended control plots that received no nutr ...
12 Modoc Plateau Region
... Northeastern California is particularly noted for its charismatic large mammals, sagebrush-dependent species, and waterfowl. By the 1920s, however, widespread hunting for marketable game and for predator control that occurred in the years following the Gold Rush eliminated California bighorn sheep, ...
... Northeastern California is particularly noted for its charismatic large mammals, sagebrush-dependent species, and waterfowl. By the 1920s, however, widespread hunting for marketable game and for predator control that occurred in the years following the Gold Rush eliminated California bighorn sheep, ...
as a PDF
... Morphological approaches have been used extensively to understand assembly rules (species interactions, environmental filtering, and neutral processes) that structure ecological communities. Desert anurans cope with limited water by either being restricted to permanent water or becoming more fossoria ...
... Morphological approaches have been used extensively to understand assembly rules (species interactions, environmental filtering, and neutral processes) that structure ecological communities. Desert anurans cope with limited water by either being restricted to permanent water or becoming more fossoria ...
Conservation benefits of marine reserves for fish populations
... Overfishing is widespread in the developing world and many fish populations have declined sharply due to intensive fishing (Russ, 1991; Roberts & Hawkins, 1999). Conservation in these areas is particularly challenging, because many coastal dwellers rely on fishing for employment, food and income and ...
... Overfishing is widespread in the developing world and many fish populations have declined sharply due to intensive fishing (Russ, 1991; Roberts & Hawkins, 1999). Conservation in these areas is particularly challenging, because many coastal dwellers rely on fishing for employment, food and income and ...
Environmental Factors Shaping the Littoral Biodiversity in the
... partly due to changes in land-use management and practices, but more importantly due to eutrophication. Therefore it has been a common “silent” understanding that nature protection measures, e.g. foundation of nature protection areas and biosphere reserves should be done predominantly in areas least ...
... partly due to changes in land-use management and practices, but more importantly due to eutrophication. Therefore it has been a common “silent” understanding that nature protection measures, e.g. foundation of nature protection areas and biosphere reserves should be done predominantly in areas least ...
How functional is functional? Ecological groupings in terrestrial
... factors’’. Other authors have applied the term to describe species that do not respond in a similar way to ecosystem functions but perform the same ecosystem service e.g. by influencing nutrient cycling, productivity, water uptake, or trophic levels (Box 1996; Diaz and Cabido 1997; Blondel 2003; Dia ...
... factors’’. Other authors have applied the term to describe species that do not respond in a similar way to ecosystem functions but perform the same ecosystem service e.g. by influencing nutrient cycling, productivity, water uptake, or trophic levels (Box 1996; Diaz and Cabido 1997; Blondel 2003; Dia ...
Peterson et al. 2013
... individuals (>3 m apart) across the range of habitats naturally occupied at Grand Bluff. A “target-neighbor” design was used to quantify intra- and interspecific interactions. Each species was treated as a “target” in three treatments: alone, with M. guttatus, and with M. laciniatus. We planted thre ...
... individuals (>3 m apart) across the range of habitats naturally occupied at Grand Bluff. A “target-neighbor” design was used to quantify intra- and interspecific interactions. Each species was treated as a “target” in three treatments: alone, with M. guttatus, and with M. laciniatus. We planted thre ...
White-nose Syndrome Jumps to a - Bat Conservation International
... Syndrome – and we know far less about where these bats hibernate than we do in the east, so tracking and monitoring the disease will be much more difficult.” The U.S. Fish and Wildlife Service and the Oklahoma Department of Wildlife Conservation said in a news release today (May 20, 2010) that the f ...
... Syndrome – and we know far less about where these bats hibernate than we do in the east, so tracking and monitoring the disease will be much more difficult.” The U.S. Fish and Wildlife Service and the Oklahoma Department of Wildlife Conservation said in a news release today (May 20, 2010) that the f ...
Otway - Natural Resources South Australia
... decimated their population in the 18th and 19th centuries and they have been slow to recover. Sea-lions are now protected in Australian waters, but there are still many threats to their survival in SA. Australian Sea-lions are killed illegally and accidentally. This is often a result of entanglement ...
... decimated their population in the 18th and 19th centuries and they have been slow to recover. Sea-lions are now protected in Australian waters, but there are still many threats to their survival in SA. Australian Sea-lions are killed illegally and accidentally. This is often a result of entanglement ...
Tragedy of the Commons
... -§ 101- suggests environmental considerations but makes none of them mandatory -§ 102c- requires federal agencies to consult with other agencies that have some jurisdiction or special expertise regarding environmental impacts at issue -EIS must be prepared by any agency whose major federal actions s ...
... -§ 101- suggests environmental considerations but makes none of them mandatory -§ 102c- requires federal agencies to consult with other agencies that have some jurisdiction or special expertise regarding environmental impacts at issue -EIS must be prepared by any agency whose major federal actions s ...
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.