Year-to-year variation in plant competition in a mountain grassland
... with climate are always plagued with statistical problems. These data cannot be used to demonstrate the role of climate in changing species’ competitive abilities; rather, density of a species has to be manipulated experimentally over several years. Two kinds of manipulative experiment can be used t ...
... with climate are always plagued with statistical problems. These data cannot be used to demonstrate the role of climate in changing species’ competitive abilities; rather, density of a species has to be manipulated experimentally over several years. Two kinds of manipulative experiment can be used t ...
Southern Lessons: Saving Species Through the National Forest
... these species are "well-distributed in the planning area." These proactive conservation requirements mean that the Forest Service must go far beyond the minimum species preservation and recovery goals of the Endangered Species Act, in the process helping to prevent the need for ESA listings. The Fo ...
... these species are "well-distributed in the planning area." These proactive conservation requirements mean that the Forest Service must go far beyond the minimum species preservation and recovery goals of the Endangered Species Act, in the process helping to prevent the need for ESA listings. The Fo ...
- New Zealand Ecological Society
... for conservation management when the vegetation type is rare and conservation strategies are required for its protection. The restoration of wetland habitats in New Zealand is a major focus for biodiversity protection, the provision of ecosystem services, and maintenance of recreational hunting oppo ...
... for conservation management when the vegetation type is rare and conservation strategies are required for its protection. The restoration of wetland habitats in New Zealand is a major focus for biodiversity protection, the provision of ecosystem services, and maintenance of recreational hunting oppo ...
The Impact of Congressman Pombo`s Anti
... Conclusion For more than 30 years, Americans have committed to protecting and conserving our nation’s wildlife so that future generations can enjoy a vast array of plants and animals. Thanks to the Endangered Species Act’s protections, pesticide use is monitored and mitigated in ways that benefit no ...
... Conclusion For more than 30 years, Americans have committed to protecting and conserving our nation’s wildlife so that future generations can enjoy a vast array of plants and animals. Thanks to the Endangered Species Act’s protections, pesticide use is monitored and mitigated in ways that benefit no ...
Biological soil crust and vascular ... sand savanna of northwestern Ohio1
... 1995, Metroparks field crews removed some of the woody alien and invasive native species from the central portion of the Barren and many of the pines and aspens that were encroaching from the forested edges. This management led to the local extirpation or reduction of some species. ...
... 1995, Metroparks field crews removed some of the woody alien and invasive native species from the central portion of the Barren and many of the pines and aspens that were encroaching from the forested edges. This management led to the local extirpation or reduction of some species. ...
Edge effect on carabid assemblages along forest
... Our results proved that there was a significant edge effect on the studied carabid communities: the Shannon diversity increased significantly along the transects from the forest towards the grass. The diversity of the carabids were significantly higher in the forest edge and in the grass than in the ...
... Our results proved that there was a significant edge effect on the studied carabid communities: the Shannon diversity increased significantly along the transects from the forest towards the grass. The diversity of the carabids were significantly higher in the forest edge and in the grass than in the ...
Biodiversity and Climate Change: Integrating
... & Griffen 2003), and drought tolerance (Ramirez-Valiente et al. 2009) all exhibit significant genetic variation shaped by selection along environmental gradients. Niche evolutionary lability, however, requires much more than the mere existence of genetic variance for traits involved in niche definit ...
... & Griffen 2003), and drought tolerance (Ramirez-Valiente et al. 2009) all exhibit significant genetic variation shaped by selection along environmental gradients. Niche evolutionary lability, however, requires much more than the mere existence of genetic variance for traits involved in niche definit ...
PDF 1.1 MB - LUCID EAST AFRICA
... sufficiently high nutrient quality (Walker, 1993). Grazing animals may exert beneficial or mutual influences on the vegetation for their own good but on the other hand, large concentration of them often have harmful effects on the plants because of selectivity and overgrazing. Quantifying the impact ...
... sufficiently high nutrient quality (Walker, 1993). Grazing animals may exert beneficial or mutual influences on the vegetation for their own good but on the other hand, large concentration of them often have harmful effects on the plants because of selectivity and overgrazing. Quantifying the impact ...
The Rising TIDE - Toledo Institute for Development and Environment
... Tree planting has positively contributed to Toledo’s clean rivers and healthy coral reefs, as trees along the banks trap sediment and prevent erosion. It has also restored habitat for forest and aquatic species. Rangers have observed an increase in gibnut, tapir, jaguar, and multiple bird species, i ...
... Tree planting has positively contributed to Toledo’s clean rivers and healthy coral reefs, as trees along the banks trap sediment and prevent erosion. It has also restored habitat for forest and aquatic species. Rangers have observed an increase in gibnut, tapir, jaguar, and multiple bird species, i ...
Seafarers or castaways: ecological traits associated with rafting
... 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 structurally similar to aggregations of flotsam such as log ...
... 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 structurally similar to aggregations of flotsam such as log ...
Longleaf pine ecosystem - Digital Commons@Georgia Southern
... tortoise is what is known as a keystone species, meaning that it is vital to the survival of many other species in this ecosystem. Over 360 other animals use the gopher tortoise burrows for food and shelter. Red cockaded woodpeckers, indigo snakes, fox squirrels, and eastern diamondback rattlesnakes ...
... tortoise is what is known as a keystone species, meaning that it is vital to the survival of many other species in this ecosystem. Over 360 other animals use the gopher tortoise burrows for food and shelter. Red cockaded woodpeckers, indigo snakes, fox squirrels, and eastern diamondback rattlesnakes ...
Kamau_LUCID_WP36
... sufficiently high nutrient quality (Walker, 1993). Grazing animals may exert beneficial or mutual influences on the vegetation for their own good but on the other hand, large concentration of them often have harmful effects on the plants because of selectivity and overgrazing. Quantifying the impact ...
... sufficiently high nutrient quality (Walker, 1993). Grazing animals may exert beneficial or mutual influences on the vegetation for their own good but on the other hand, large concentration of them often have harmful effects on the plants because of selectivity and overgrazing. Quantifying the impact ...
The Influence of Predator-Prey Population Dynamics on the Long
... deals with competition between species and predator-prey interactions in a food web which can have any arbitrary structure of links generated by the evolutionary process. The equations used here are based on ratio-dependent functional responses (Arditi & Ginsburg, 1989; Arditi & Akçakaya, 1990; Ard ...
... deals with competition between species and predator-prey interactions in a food web which can have any arbitrary structure of links generated by the evolutionary process. The equations used here are based on ratio-dependent functional responses (Arditi & Ginsburg, 1989; Arditi & Akçakaya, 1990; Ard ...
Oct/Nov 2007 - Barung Landcare
... cover filters sediment and catches nutrients contained in the large amounts of runoff generated by our (usually) bountiful rainfall. It also stabilises the soil (particularly on stream banks). The future for agriculture (and therefore civilization?) depends on our ability to adopt productive farming ...
... cover filters sediment and catches nutrients contained in the large amounts of runoff generated by our (usually) bountiful rainfall. It also stabilises the soil (particularly on stream banks). The future for agriculture (and therefore civilization?) depends on our ability to adopt productive farming ...
Transfer of fixed nitrogen to bacteria associated with filamentous
... The last winter in Scandinavia was relatively cold with persistent cold, dry northeasterly winds replacing the inflow of moist, warm air from the North Atlantic. The subsequent cooling of the North Sea ...
... The last winter in Scandinavia was relatively cold with persistent cold, dry northeasterly winds replacing the inflow of moist, warm air from the North Atlantic. The subsequent cooling of the North Sea ...
Impact of prescribed burning on endophytic insect
... dwellers that can escape the flames may be favored by changes in the plant community brought about by burning (Swengel 2001a; Meyer et al. 2002). On the other hand, less vagile species that inhabit the ‘fuel layer’ of the plant community are highly vulnerable to burning and suffer dramatic reduction ...
... dwellers that can escape the flames may be favored by changes in the plant community brought about by burning (Swengel 2001a; Meyer et al. 2002). On the other hand, less vagile species that inhabit the ‘fuel layer’ of the plant community are highly vulnerable to burning and suffer dramatic reduction ...
Juan Fernández petrel
... dimension of burrow entrances of Juan Fernández and Stejneger’s petrels. Thus, burrow entrance size is a characteristic feature that allows quick identification and accurate assignment of burrows to one of the species and provides a useful tool for carrying out population censuses, searching for bur ...
... dimension of burrow entrances of Juan Fernández and Stejneger’s petrels. Thus, burrow entrance size is a characteristic feature that allows quick identification and accurate assignment of burrows to one of the species and provides a useful tool for carrying out population censuses, searching for bur ...
Evolution of weaponry in female bovids
... Antipredator defences in animals fall into two exclusive categories: (i) crypsis or (ii) defence against predatory attack, which can be active or passive as in the case of aposematism (Poulton 1890). In birds and mammals, including bovids ( Jarman 1974), crypsis is enhanced in small species that can ...
... Antipredator defences in animals fall into two exclusive categories: (i) crypsis or (ii) defence against predatory attack, which can be active or passive as in the case of aposematism (Poulton 1890). In birds and mammals, including bovids ( Jarman 1974), crypsis is enhanced in small species that can ...
Taking action for The Amsterdam albatross
... Ministère de l’écologie, du Développement durable et de l’énergie ...
... Ministère de l’écologie, du Développement durable et de l’énergie ...
Coevolutionary motion and swarming in a niche space model of
... aware that many ecological interactions cannot be described in this formalism. Most prominently the interaction strength will usually depend on many other factors than just the nichedistance. Also it is not clear that all the species in a community can be described in a single niche space. In a high ...
... aware that many ecological interactions cannot be described in this formalism. Most prominently the interaction strength will usually depend on many other factors than just the nichedistance. Also it is not clear that all the species in a community can be described in a single niche space. In a high ...
JNCC Report No. 585: Conceptual Ecological Modelling of Shallow
... Sub-model 1. Suspension and Deposit Feeding Infauna Sub-model 2. Small Mobile Fauna or Tube/Burrow Dwelling Crustaceans Sub-model 3. Mobile Epifauna, Predators and Scavengers Sub-model 4. Attached Epifauna and Macroalgae Confidence model 1. Suspension and Deposit Feeding Infauna Confidence model 2. ...
... Sub-model 1. Suspension and Deposit Feeding Infauna Sub-model 2. Small Mobile Fauna or Tube/Burrow Dwelling Crustaceans Sub-model 3. Mobile Epifauna, Predators and Scavengers Sub-model 4. Attached Epifauna and Macroalgae Confidence model 1. Suspension and Deposit Feeding Infauna Confidence model 2. ...
Functional diversity within a morphologically conservative genus of
... Enneacanthus (Sweeney 1972; Roe, Harris & Mayden 2002). Following earlier work (Harris 1995; Chalcraft & Resetarits 2003a; Loreau 2004), we take a strict view of functional equivalence; functional equivalence is the lack of a significant difference in performance between monospecific cultures of spe ...
... Enneacanthus (Sweeney 1972; Roe, Harris & Mayden 2002). Following earlier work (Harris 1995; Chalcraft & Resetarits 2003a; Loreau 2004), we take a strict view of functional equivalence; functional equivalence is the lack of a significant difference in performance between monospecific cultures of spe ...
A new parameterization for estimating co
... parameterization allows the effects of covariates to be specified without the estimation problems described by MacKenzie et al. (2004). In our approach, the occurrence of one species is assumed to depend on the occurrence of another, but the occurrence of the second species is not assumed to depend o ...
... parameterization allows the effects of covariates to be specified without the estimation problems described by MacKenzie et al. (2004). In our approach, the occurrence of one species is assumed to depend on the occurrence of another, but the occurrence of the second species is not assumed to depend o ...
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 ...
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.