Do aquatic macrophytes co-occur randomly? An analysis of null
... may have opposite effects that therefore prevent the formation of a spatial pattern (Gotelli and Graves 1996). Factors explaining the structure of aquatic macrophyte associations may be nested, and their importance may vary according to the grain and extent (sensu Wiens 1989). At a coarse extent, ge ...
... may have opposite effects that therefore prevent the formation of a spatial pattern (Gotelli and Graves 1996). Factors explaining the structure of aquatic macrophyte associations may be nested, and their importance may vary according to the grain and extent (sensu Wiens 1989). At a coarse extent, ge ...
pdf file - UNM Biology
... decade later. Thus. this study is unique in both the Study site and experimental treatments length of time that the manipulations have been mainThe study was conducted on the Cave Creek Bajada tained and monitored. and in its repetition at a much (bajada = an alluvial fan), 6.5 km east and 2 km nort ...
... decade later. Thus. this study is unique in both the Study site and experimental treatments length of time that the manipulations have been mainThe study was conducted on the Cave Creek Bajada tained and monitored. and in its repetition at a much (bajada = an alluvial fan), 6.5 km east and 2 km nort ...
secondary succession in an experimentally fragmented
... Distance effects on succession.—The distance of isolated patches from source pools of potential colonists should strongly affect succession (Dzwonko 1993, Grashof-Bokdam and Geertsema 1998, Butaye et al. 2001), both directly and as a modulator of local mechanisms driving succession. Plants with ligh ...
... Distance effects on succession.—The distance of isolated patches from source pools of potential colonists should strongly affect succession (Dzwonko 1993, Grashof-Bokdam and Geertsema 1998, Butaye et al. 2001), both directly and as a modulator of local mechanisms driving succession. Plants with ligh ...
Report Under the Cover of the Swedish Forestry Model
... keep a certain percentage set aside for protection, but there is nothing to stop them from exchanging one area for another in order to log a previously set aside area. Studies carried out by NGOs show that valuable set aside areas with high conservation values on productive forest land get exchanged ...
... keep a certain percentage set aside for protection, but there is nothing to stop them from exchanging one area for another in order to log a previously set aside area. Studies carried out by NGOs show that valuable set aside areas with high conservation values on productive forest land get exchanged ...
File - Science Source
... this most likely have on the great horned owl? a. It would become extinct b. There would be little effect on its population. c. Its population would move to a new habitat. d. Its population would decrease and then reach a natural balance. 7. The increasing human population has caused which of the fo ...
... this most likely have on the great horned owl? a. It would become extinct b. There would be little effect on its population. c. Its population would move to a new habitat. d. Its population would decrease and then reach a natural balance. 7. The increasing human population has caused which of the fo ...
University of Groningen Rewilding with large herbivores Smit
... Several factors are known to affect sapling survival (Clark et al., 1999). First of all, browsing and trampling by large herbivores limit sapling survival, especially at high herbivore densities (Côté et al., 2004). Secondly, light competition with herbaceous plants can limit sapling survival (Vande ...
... Several factors are known to affect sapling survival (Clark et al., 1999). First of all, browsing and trampling by large herbivores limit sapling survival, especially at high herbivore densities (Côté et al., 2004). Secondly, light competition with herbaceous plants can limit sapling survival (Vande ...
doc - ChinCare.com
... life. In fact, juveniles can play with almost any group for the first couple of years. At this age, if the juvenile is male, other adult males, including his father, will start to fight with him—they probably perceive a young male as reproductive competition. However, related females seem not to sho ...
... life. In fact, juveniles can play with almost any group for the first couple of years. At this age, if the juvenile is male, other adult males, including his father, will start to fight with him—they probably perceive a young male as reproductive competition. However, related females seem not to sho ...
MosquitoLife Cycles, Ecology and
... (e.g. Culex, Coquillettidia, Mansonia species). (See Fig.1) Culex mosquitoes lay their eggs on the surface of suitable standing water in rafts consisting of between 50 and 500 eggs. These eggs are not dessication resistant and do not lie dormant, instead they hatch within a few days. Consequently Cu ...
... (e.g. Culex, Coquillettidia, Mansonia species). (See Fig.1) Culex mosquitoes lay their eggs on the surface of suitable standing water in rafts consisting of between 50 and 500 eggs. These eggs are not dessication resistant and do not lie dormant, instead they hatch within a few days. Consequently Cu ...
Bioeconomics and biodiversity in harvested metacommunities: a
... 2012) and, in a variety of conditions, has been shown to improve management outcomes (e.g., Thrush et al. 1998, Sanchirico and Wilen 1999, Neubert 2003, Kellner et al. 2007, Neubert and Herrera 2008, Moeller and Neubert 2013). Marine reserves—spatial management in which some areas are closed to fish ...
... 2012) and, in a variety of conditions, has been shown to improve management outcomes (e.g., Thrush et al. 1998, Sanchirico and Wilen 1999, Neubert 2003, Kellner et al. 2007, Neubert and Herrera 2008, Moeller and Neubert 2013). Marine reserves—spatial management in which some areas are closed to fish ...
The role of metapopulations in conservation
... introduced for the metapopulation is 370---960 km2 . All reserves are enclosed with electrical fences, to protect the wild dogs and to minimize conflict with livestock farmers. Fences act as important barriers to the movements of the dogs, so that there is little emigration and even less immigration ...
... introduced for the metapopulation is 370---960 km2 . All reserves are enclosed with electrical fences, to protect the wild dogs and to minimize conflict with livestock farmers. Fences act as important barriers to the movements of the dogs, so that there is little emigration and even less immigration ...
CONSERVATION GENETICS OF THE LARGEST CLUSTER OF
... habitat that supports virtually all tortoise populations has been reduced by .80% (Mushinsky et al., 2006). Much of the remaining habitat is isolated within an unsuitable intervening matrix of human development and other land uses (Auffenberg and Franz, 1982; McCoy et al., 2006; Mushinsky et al., 20 ...
... habitat that supports virtually all tortoise populations has been reduced by .80% (Mushinsky et al., 2006). Much of the remaining habitat is isolated within an unsuitable intervening matrix of human development and other land uses (Auffenberg and Franz, 1982; McCoy et al., 2006; Mushinsky et al., 20 ...
Leave No Trace - Williamson County
... Outdoor Ethics for Heritage Sites – LNT Adaptations •Climbing, sitting or walking on walls and other constructed features weakens them. Walls that are stressed may suddenly collapse. •Avoid walking on artifacts and middens. •Artifacts and fossils left where they are help tell the story of the past. ...
... Outdoor Ethics for Heritage Sites – LNT Adaptations •Climbing, sitting or walking on walls and other constructed features weakens them. Walls that are stressed may suddenly collapse. •Avoid walking on artifacts and middens. •Artifacts and fossils left where they are help tell the story of the past. ...
Also available as free
... Edward O. Wilson (Cambridge, MA, USA), ECI Prize winner 1987 in terrestrial ecology. Quotation of the Jury (Chairman: Sir Richard Southwood, Oxford, UK) Professor E. O. Wilson is distinguished for his many contributions to different aspects of ecology and evolutionary biology. His life-time love of ...
... Edward O. Wilson (Cambridge, MA, USA), ECI Prize winner 1987 in terrestrial ecology. Quotation of the Jury (Chairman: Sir Richard Southwood, Oxford, UK) Professor E. O. Wilson is distinguished for his many contributions to different aspects of ecology and evolutionary biology. His life-time love of ...
Extinctions in Ecological Communities – Alva Curtsdotter
... This research is rather of a basic than of an applied nature; but in addition to this knowledge being valuable in itself, a general understanding of extinction processes is valuable for natural management and conservation. ...
... This research is rather of a basic than of an applied nature; but in addition to this knowledge being valuable in itself, a general understanding of extinction processes is valuable for natural management and conservation. ...
Facilitation contributes to Mediterranean woody plant diversity but
... how the competition–facilitation balance affects species diversity at the community level across stress gradients (Soliveres et al., 2011, 2012), with even fewer studies at macroecological scales (Cavieres et al., 2014). One clear connection between HBM and SGH emerges when productivity is limited p ...
... how the competition–facilitation balance affects species diversity at the community level across stress gradients (Soliveres et al., 2011, 2012), with even fewer studies at macroecological scales (Cavieres et al., 2014). One clear connection between HBM and SGH emerges when productivity is limited p ...
MACRO-INVERTEBRATE FUNCTIONAL GROUPS IN
... 1974, Aller 1982, Krantzberg 1985), such as their ability to influence non-trophic geochemical parameters via bioturbation processes, has led to the identification of other functions for benthic species based on different functional criteria. Various types of biological processes may take place in t ...
... 1974, Aller 1982, Krantzberg 1985), such as their ability to influence non-trophic geochemical parameters via bioturbation processes, has led to the identification of other functions for benthic species based on different functional criteria. Various types of biological processes may take place in t ...
Still Creek Watershed Biodiversity Conservation Case
... roads, urban development). Areas of contiguous (unfragmented) habitat identified through the patch analysis were classified based on their size (area) to identify habitat reservoirs and habitat refuges. A habitat refuge is defined as a small patch of habitat that provides food, shelter and/or other ...
... roads, urban development). Areas of contiguous (unfragmented) habitat identified through the patch analysis were classified based on their size (area) to identify habitat reservoirs and habitat refuges. A habitat refuge is defined as a small patch of habitat that provides food, shelter and/or other ...
Habitat heterogeneity, biogenic disturbance, and
... Abstract. Habitat heterogeneity is a major structuring agent of ecological assemblages promoting beta diversity and ultimately contributing to overall higher global diversity. The exact processes by which heterogeneity increases diversity are scale dependent and encompass variation in other well-kno ...
... Abstract. Habitat heterogeneity is a major structuring agent of ecological assemblages promoting beta diversity and ultimately contributing to overall higher global diversity. The exact processes by which heterogeneity increases diversity are scale dependent and encompass variation in other well-kno ...
Diversity and ecosystem functioning: Litter decomposition
... Another approach was used to examine additive and nonadditive effects of species loss following the method suggested by Ball et al. (2008). For this, a GLM (type I) sum of squares with litter disappearance as the dependent variable was used. We sequentially included time, block and the presence/abse ...
... Another approach was used to examine additive and nonadditive effects of species loss following the method suggested by Ball et al. (2008). For this, a GLM (type I) sum of squares with litter disappearance as the dependent variable was used. We sequentially included time, block and the presence/abse ...
Alternative causes of edge-abundance relationships in birds and
... more subtle, and are potentially subject to intervention and mitigation by land managers. Understanding how these remaining habitat patches are affected by surrounding lands through their shared edges is an important step towards protecting the populations of plants and animals that depend on remnan ...
... more subtle, and are potentially subject to intervention and mitigation by land managers. Understanding how these remaining habitat patches are affected by surrounding lands through their shared edges is an important step towards protecting the populations of plants and animals that depend on remnan ...
Balanced harvesting in fisheries: a preliminary analysis of
... ecosystem, in proportion to their natural productivity so that the relative size and species composition are maintained, in line with the CBD requirement for sustainable use. This proposal has many and not always intuitive implications for fisheries management, e.g. in relation to selectivity, protec ...
... ecosystem, in proportion to their natural productivity so that the relative size and species composition are maintained, in line with the CBD requirement for sustainable use. This proposal has many and not always intuitive implications for fisheries management, e.g. in relation to selectivity, protec ...
Habitat Variability and Complexity in the Upper San Francisco Estuary
... through tidal action and of fish becoming toxic to eat. Simplifying habitat, dredging channels, eliminating floodplains and marshes, diverting inflowing water, and bringing in alien species, cause food webs to change in unfavorable ways, fisheries to collapse, and endemic species to become threatene ...
... through tidal action and of fish becoming toxic to eat. Simplifying habitat, dredging channels, eliminating floodplains and marshes, diverting inflowing water, and bringing in alien species, cause food webs to change in unfavorable ways, fisheries to collapse, and endemic species to become threatene ...
Reconciliation ecology
Reconciliation ecology is the branch of ecology which studies ways to encourage biodiversity in human-dominated ecosystems. Michael Rosenzweig first articulated the concept in his book Win-Win Ecology, based on the theory that there is not enough area for all of earth’s biodiversity to be saved within designated nature preserves. Therefore, humans should increase biodiversity in human-dominated landscapes. By managing for biodiversity in ways that do not decrease human utility of the system, it is a ""win-win"" situation for both human use and native biodiversity. The science is based in the ecological foundation of human land-use trends and species-area relationships. It has many benefits beyond protection of biodiversity, and there are numerous examples of it around the globe. Aspects of reconciliation ecology can already be found in management legislation, but there are challenges in both public acceptance and ecological success of reconciliation attempts.