The Cronus hypothesis – extinction as a necessary and dynamic
... Earth mother) posits that life on Earth functions like a single, self-regulating organism, whereas Medea (siblicidal wife of Jason of the Argonauts) describes instead a self-destructive feedback where life ‘seeks’ to destroy itself. We argue that these contrasting views are actually extremes of a sc ...
... Earth mother) posits that life on Earth functions like a single, self-regulating organism, whereas Medea (siblicidal wife of Jason of the Argonauts) describes instead a self-destructive feedback where life ‘seeks’ to destroy itself. We argue that these contrasting views are actually extremes of a sc ...
Grand Challenge 1
... Sainmont J, Thygesen UH, Visser AW. 2012. Diel vertical migration arising in a habitat selection game. J Theoretical Ecology. doi:10.1007/s12080-012-0714-0 Relevance: A population of identical individuals can exhibit different vertical migration behaviours even when there is no explicit density depe ...
... Sainmont J, Thygesen UH, Visser AW. 2012. Diel vertical migration arising in a habitat selection game. J Theoretical Ecology. doi:10.1007/s12080-012-0714-0 Relevance: A population of identical individuals can exhibit different vertical migration behaviours even when there is no explicit density depe ...
56_Lecture_Presentation_PC
... Species Diversity • Species diversity is the variety of species in an ecosystem or throughout the biosphere • According to the U.S. Endangered Species Act – An endangered species is “in danger of becoming extinct throughout all or a significant portion of its range” – A threatened species is likely ...
... Species Diversity • Species diversity is the variety of species in an ecosystem or throughout the biosphere • According to the U.S. Endangered Species Act – An endangered species is “in danger of becoming extinct throughout all or a significant portion of its range” – A threatened species is likely ...
Ch 56 PPT
... Species Diversity • Species diversity is the variety of species in an ecosystem or throughout the biosphere • According to the U.S. Endangered Species Act – An endangered species is “in danger of becoming extinct throughout all or a significant portion of its range” – A threatened species is likely ...
... Species Diversity • Species diversity is the variety of species in an ecosystem or throughout the biosphere • According to the U.S. Endangered Species Act – An endangered species is “in danger of becoming extinct throughout all or a significant portion of its range” – A threatened species is likely ...
Unit IX - Ecology - Lesson Module
... the host. Some parasites, such as aphids, fleas, or mistletoe, feed on the external surface of a host. The parasite-host populations that have survived have been those where neither has a devastating effect on the other. Parasitism that results in the rapid death of the host is devastating to ...
... the host. Some parasites, such as aphids, fleas, or mistletoe, feed on the external surface of a host. The parasite-host populations that have survived have been those where neither has a devastating effect on the other. Parasitism that results in the rapid death of the host is devastating to ...
Keystone species - Department of Conservation
... It seems probable that in any community the removal of individual species would reveal a spectrum of types from so-called redundant species (whose removal has a negligible effect) to keystone species (whose removal causes major changes). The existence of redundant species may be implicit in the ...
... It seems probable that in any community the removal of individual species would reveal a spectrum of types from so-called redundant species (whose removal has a negligible effect) to keystone species (whose removal causes major changes). The existence of redundant species may be implicit in the ...
BioScience - Oxford Academic
... integral to the success of humankind, who have been exploiting the genetic diversity of plants and animals for over 12,000 years (Driscoll et al. 2009). Success, however, has come at a cost: As a consequence of human-driven environmental change (the Anthropocene), the Earth is now experiencing massi ...
... integral to the success of humankind, who have been exploiting the genetic diversity of plants and animals for over 12,000 years (Driscoll et al. 2009). Success, however, has come at a cost: As a consequence of human-driven environmental change (the Anthropocene), the Earth is now experiencing massi ...
Evaluation of Ecological Impacts from Highway
... individual species, their immediate habitats, and general natural resource categories such as water and air quality. Although this approach has afforded some protection to individual species and their ecosystems,it is inadequate for regional or global biodiversity protection efforts. The need to add ...
... individual species, their immediate habitats, and general natural resource categories such as water and air quality. Although this approach has afforded some protection to individual species and their ecosystems,it is inadequate for regional or global biodiversity protection efforts. The need to add ...
Taking a Broader Landscape Approach
... General comments and recommendations for consideration: The implementation of the Endangered Species Act, 2007 (ESA) has contributed to uncertainty and frustration with respect to both implementation and transition for the new housing and development industry. Therefore the ESA requires streamlini ...
... General comments and recommendations for consideration: The implementation of the Endangered Species Act, 2007 (ESA) has contributed to uncertainty and frustration with respect to both implementation and transition for the new housing and development industry. Therefore the ESA requires streamlini ...
File
... uninhabited area and that starts an ecological cycle in which many other species become established. • Over time, a pioneer species will make the new area habitable for other species. • A climax community is the final, stable community in equilibrium with the environment. • Even though a climax comm ...
... uninhabited area and that starts an ecological cycle in which many other species become established. • Over time, a pioneer species will make the new area habitable for other species. • A climax community is the final, stable community in equilibrium with the environment. • Even though a climax comm ...
EnvSci Ch5 PPT
... uninhabited area and that starts an ecological cycle in which many other species become established. • Over time, a pioneer species will make the new area habitable for other species. • A climax community is the final, stable community in equilibrium with the environment. • Even though a climax comm ...
... uninhabited area and that starts an ecological cycle in which many other species become established. • Over time, a pioneer species will make the new area habitable for other species. • A climax community is the final, stable community in equilibrium with the environment. • Even though a climax comm ...
Chapter 6: Biological Resources and Biodiversity of Dutchess
... the systems they occupy requires some familiarity with the current state of the resources, both rare and common. Biodiversity conservation in Dutchess County requires collaboration of private land-owners and local decision makers. Over 90 percent of the county is privately owned, and many important ...
... the systems they occupy requires some familiarity with the current state of the resources, both rare and common. Biodiversity conservation in Dutchess County requires collaboration of private land-owners and local decision makers. Over 90 percent of the county is privately owned, and many important ...
DR on Adoption of Guidance and Definitions Rev1
... f. Whether disturbance effects ultimately impact on population size depends not only on whether these affect survival and/or reproductive success, but also whether density-dependent processes operate within the population. This will determine whether the population will ‘compensate’ for losses throu ...
... f. Whether disturbance effects ultimately impact on population size depends not only on whether these affect survival and/or reproductive success, but also whether density-dependent processes operate within the population. This will determine whether the population will ‘compensate’ for losses throu ...
Low biodiversity state persists two decades after cessation of nutrient enrichment
... et al. 2005). Therefore, further experimental evidence is needed to determine whether few or many terrestrial ecosystems have alternative stable states (Scheffer & Carpenter 2003; Schmitz 2004; Schr€ oder et al. 2005). One experimental approach to test for alternative stable states consists of deter ...
... et al. 2005). Therefore, further experimental evidence is needed to determine whether few or many terrestrial ecosystems have alternative stable states (Scheffer & Carpenter 2003; Schmitz 2004; Schr€ oder et al. 2005). One experimental approach to test for alternative stable states consists of deter ...
APPLICATION OF ECOLOGICAL CRITERIA IN SELECTING
... Abstract. Marine reserves are being established worldwide in response to a growing recognition of the conservation crisis that is building in the oceans. However, designation of reserves has been largely opportunistic, or protective measures have been implemented (often overlapping and sometimes in ...
... Abstract. Marine reserves are being established worldwide in response to a growing recognition of the conservation crisis that is building in the oceans. However, designation of reserves has been largely opportunistic, or protective measures have been implemented (often overlapping and sometimes in ...
Megafauna and ecosystem function from the
... modern, they indicate resources, danger, power, and charisma, but, beyond these impacts, such large animals have profound and distinct effects on the nature and functioning of the ecosystems they inhabit. Martin (8) first posited a major human role in past megafaunal disappearances, and, since then, ...
... modern, they indicate resources, danger, power, and charisma, but, beyond these impacts, such large animals have profound and distinct effects on the nature and functioning of the ecosystems they inhabit. Martin (8) first posited a major human role in past megafaunal disappearances, and, since then, ...
Streaked horned lark habitat selection and restoration, by Scott F
... which Peter regards as the real work of the future. Finally, there is a need to restore connectivity among remaining fragments of oak habitat. Current Extent of Protected Areas and Opportunities for Protection The current extent of protected Garry oak ecosystems includes Mima Mounds, Glacial Heritag ...
... which Peter regards as the real work of the future. Finally, there is a need to restore connectivity among remaining fragments of oak habitat. Current Extent of Protected Areas and Opportunities for Protection The current extent of protected Garry oak ecosystems includes Mima Mounds, Glacial Heritag ...
2012-2013 Annual Report - Jasper Ridge Biological Preserve
... role of teacher-scholars through outstanding research, excellent education and the integration of education and research within the context of the mission of their organizations.” Tad’s expanded research includes a second field site on Stanford lands, a second Jasper Ridge plant species (Pediculari ...
... role of teacher-scholars through outstanding research, excellent education and the integration of education and research within the context of the mission of their organizations.” Tad’s expanded research includes a second field site on Stanford lands, a second Jasper Ridge plant species (Pediculari ...
Introduction to Ecology PPT
... • Water absorbs light, thus in aquatic environments most photosynthesis occurs near the surface • In deserts, high light levels increase temperature and can stress plants and animals ...
... • Water absorbs light, thus in aquatic environments most photosynthesis occurs near the surface • In deserts, high light levels increase temperature and can stress plants and animals ...
44KB - NZQA
... may include but is not limited to – catching depth, over settlement, control of catching densities, control of fouling, tank design; evidence is required for one. ...
... may include but is not limited to – catching depth, over settlement, control of catching densities, control of fouling, tank design; evidence is required for one. ...
Coexistence, niches and biodiversity effects on ecosystem functioning
... productive species will come at a direct cost to their weaker opponents. Furthermore, if the productive species are competitively superior, then as they become dominant the mixture will tend to have similar characteristics to these high-yielding species. Highdiversity mixtures that contain lots of s ...
... productive species will come at a direct cost to their weaker opponents. Furthermore, if the productive species are competitively superior, then as they become dominant the mixture will tend to have similar characteristics to these high-yielding species. Highdiversity mixtures that contain lots of s ...
niche dynamics of deer mice in a fragmented, old-growth
... Pacific Northwest support one of the most diverse mammal faunas in the United States (Corn and Bury, 1991; Norse, 1990), with mammals comprising >25% of the vertebrate species in this area (>70 species of mammals on the Olympic Peninsula). Throughout the forested regions of Washington and Oregon the ...
... Pacific Northwest support one of the most diverse mammal faunas in the United States (Corn and Bury, 1991; Norse, 1990), with mammals comprising >25% of the vertebrate species in this area (>70 species of mammals on the Olympic Peninsula). Throughout the forested regions of Washington and Oregon the ...
Restoration ecology
Restoration ecology emerged as a separate field in ecology in the 1980s. It is the scientific study supporting the practice of ecological restoration, which is the practice of renewing and restoring degraded, damaged, or destroyed ecosystems and habitats in the environment by active human intervention and action. The term ""restoration ecology"" is therefore commonly used for the academic study of the process, whereas the term ""ecological restoration"" is commonly used for the actual project or process by restoration practitioners.