Freshwater spiny crayfish in North East NSW
... and territorial. They will fight each other if similar in size. When moulting Euastacus crayfish leave their burrow to seek an open space leaving them more vulnerable to predation. Adults moult every one to two years. It is thought that females moult before accepting a mating partner. ...
... and territorial. They will fight each other if similar in size. When moulting Euastacus crayfish leave their burrow to seek an open space leaving them more vulnerable to predation. Adults moult every one to two years. It is thought that females moult before accepting a mating partner. ...
Feeding Relationships among Nine Species of
... relatively high overlap, a second with intermediate overlap levels, and a third group comprised of species with relatively little dietary overlap (Table 3). The first group comprised of F. carpio, H. jaguana, and A. hepsetus, had overlap values of 0.796 for F. carpio and H. jaguana, 0.788 for F. car ...
... relatively high overlap, a second with intermediate overlap levels, and a third group comprised of species with relatively little dietary overlap (Table 3). The first group comprised of F. carpio, H. jaguana, and A. hepsetus, had overlap values of 0.796 for F. carpio and H. jaguana, 0.788 for F. car ...
Tehachapi Pocket Mouse (Perognathus alticolus
... boylii), western harvest mouse (Reithrodontomys megalotis), California pocket mouse (Chaetodipus californicus), little pocket mouse (Perognathus longimembris), agile kangaroo rat (Dipodomys agilis), desert woodrat (Neotoma lepida), pocket gopher (Thomomys bottae), and California vole (Microtus calif ...
... boylii), western harvest mouse (Reithrodontomys megalotis), California pocket mouse (Chaetodipus californicus), little pocket mouse (Perognathus longimembris), agile kangaroo rat (Dipodomys agilis), desert woodrat (Neotoma lepida), pocket gopher (Thomomys bottae), and California vole (Microtus calif ...
Bird response to disturbance varies with forest productivity in the
... recently disturbed forest stands in productive westside Cascades will experience rapid vegetative recovery supporting high levels of biomass and greater functional heterogeneity in plant communities than in forest stands in a less productive environment. Bird abundance and diversity are expected to ...
... recently disturbed forest stands in productive westside Cascades will experience rapid vegetative recovery supporting high levels of biomass and greater functional heterogeneity in plant communities than in forest stands in a less productive environment. Bird abundance and diversity are expected to ...
Alien Species - Wadden Sea Secretariat
... extends EU water legislation to the marine en vironment and follows an approach similar to that of the Water Framework Directive (European Parliament and Council, 2000). It came into force on 15 July 2008 and establishes a comprehen sive structure within which Member States are required to develop ...
... extends EU water legislation to the marine en vironment and follows an approach similar to that of the Water Framework Directive (European Parliament and Council, 2000). It came into force on 15 July 2008 and establishes a comprehen sive structure within which Member States are required to develop ...
University of Groningen Rewilding with large herbivores Smit
... human intervention. It is increasingly employed on abandoned agricultural lands in Europe, but empirical studies are scarce. Rewilding may lead to formation of wood-pastures, arguably the primeval landscape in parts of Europe before Neolithic times. We investigated sapling establishment, a key proce ...
... human intervention. It is increasingly employed on abandoned agricultural lands in Europe, but empirical studies are scarce. Rewilding may lead to formation of wood-pastures, arguably the primeval landscape in parts of Europe before Neolithic times. We investigated sapling establishment, a key proce ...
DR on Adoption of Guidance and Definitions Rev1
... b. Disturbance effects (i.e. changes in the local behaviour, distribution and abundance of birds in response to human activity) are not the same as disturbance impacts (i.e. modifications to population dynamics through changes in breeding success and/or mortality). Typically, the latter is rarely po ...
... b. Disturbance effects (i.e. changes in the local behaviour, distribution and abundance of birds in response to human activity) are not the same as disturbance impacts (i.e. modifications to population dynamics through changes in breeding success and/or mortality). Typically, the latter is rarely po ...
Economic instruments to achieve ecosystem objectives in fisheries
... the system reduces to a collection of Clark-Munro type of singlespecies equilibrium conditions. In this case, the single-species theory applies even if the fishery is actually an ecosystem fishery. Notice, however, that this is a necessary condition: all these matrices must be diagonal. If even one ...
... the system reduces to a collection of Clark-Munro type of singlespecies equilibrium conditions. In this case, the single-species theory applies even if the fishery is actually an ecosystem fishery. Notice, however, that this is a necessary condition: all these matrices must be diagonal. If even one ...
Intra-guild competition and its implications for one of the biggest
... and Troodontidae) and Coelurosauria incertae sedis [27]. Although oviraptorosaurs and troodontids may not have been obligate carnivores [29,30], many of these sympatric theropods were largely or completely carnivorous, and there is evidence for both active predation and latestage carcass consumption ...
... and Troodontidae) and Coelurosauria incertae sedis [27]. Although oviraptorosaurs and troodontids may not have been obligate carnivores [29,30], many of these sympatric theropods were largely or completely carnivorous, and there is evidence for both active predation and latestage carcass consumption ...
Exergetic Model of Secondary Successions for Plant Communities in
... Copyright © 2013 Marcos Karlin et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Ecosystems are open systems where energy fluxes ...
... Copyright © 2013 Marcos Karlin et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Ecosystems are open systems where energy fluxes ...
v01 08
... and Christenson 1985). Native snails have not been reported to eat living plant tissue; tree snails of the genus Achatinella Swainson (Achatinellidae), for example, are believed to feed exclusively on epiphytic algae and fungi (Severns 1981; Hadfield and Mountain 1980). The diets of most groups of n ...
... and Christenson 1985). Native snails have not been reported to eat living plant tissue; tree snails of the genus Achatinella Swainson (Achatinellidae), for example, are believed to feed exclusively on epiphytic algae and fungi (Severns 1981; Hadfield and Mountain 1980). The diets of most groups of n ...
Ch 9 Wildlife Biology Management
... • Situation in which plant or animal that lives in, on, or with another but does not help or harm it • Example – vultures waiting to feed on leftovers from a cougar’s kill ...
... • Situation in which plant or animal that lives in, on, or with another but does not help or harm it • Example – vultures waiting to feed on leftovers from a cougar’s kill ...
Notes on Fauna near Beachcomber
... listed only as Priority by DEC, or that are included in publications such as Garnett and Crowley (2000) and Cogger et al. (1993) but not in State or Commonwealth Acts, are also of recognised conservation significance. In addition, species that are at the limit of their distribution, those that have ...
... listed only as Priority by DEC, or that are included in publications such as Garnett and Crowley (2000) and Cogger et al. (1993) but not in State or Commonwealth Acts, are also of recognised conservation significance. In addition, species that are at the limit of their distribution, those that have ...
Document
... to represent a zone of edge influence that extends to both sides of the edge, in which structure or composition is different from either of the adjacent communities. This zone may actually begin some distance into the forest or in the adjacent non-forested area (Cadenasso et al. 1997, Harper and Mac ...
... to represent a zone of edge influence that extends to both sides of the edge, in which structure or composition is different from either of the adjacent communities. This zone may actually begin some distance into the forest or in the adjacent non-forested area (Cadenasso et al. 1997, Harper and Mac ...
Urban Systems - Stockholm Resilience Centre
... urban ecological knowledge into urban planning. In ecology there is now a growing understanding that human processes and cultures are fundamental for sustainable management of ecosystems, and in urban planning it is becoming more and more evident that urban management needs to operate at an ecosyste ...
... urban ecological knowledge into urban planning. In ecology there is now a growing understanding that human processes and cultures are fundamental for sustainable management of ecosystems, and in urban planning it is becoming more and more evident that urban management needs to operate at an ecosyste ...
video slide
... – If there are one or more significant difference in their niches EXPERIMENT Ecologist Joseph Connell studied two barnacle speciesBalanus balanoides and Chthamalus stellatus that have a stratified distribution on rocks along the coast of Scotland. ...
... – If there are one or more significant difference in their niches EXPERIMENT Ecologist Joseph Connell studied two barnacle speciesBalanus balanoides and Chthamalus stellatus that have a stratified distribution on rocks along the coast of Scotland. ...
Moment Approximations of Individual-based Models
... species i affecting the flux in and out of the pair density Ci j (ξ ), as given by the terms in the first column on the right-hand side of Equation (14.9). For each type of event affecting i, there is an equivalent one affecting j, given by the terms in the second column. It can be seen from inspectio ...
... species i affecting the flux in and out of the pair density Ci j (ξ ), as given by the terms in the first column on the right-hand side of Equation (14.9). For each type of event affecting i, there is an equivalent one affecting j, given by the terms in the second column. It can be seen from inspectio ...
Distinguishing between direct and indirect effects of predators in
... 2. We manipulated the presence of two predator species and two groups of their prey (primary consumers) and measured their independent and interactive effects on primary producers in a natural marine benthic system. The presence of predators and their prey was manipulated in the field for 14 months ...
... 2. We manipulated the presence of two predator species and two groups of their prey (primary consumers) and measured their independent and interactive effects on primary producers in a natural marine benthic system. The presence of predators and their prey was manipulated in the field for 14 months ...
Impacts of climate change on the future of biodiversity
... species can in theory change, and changes have already been observed, along three distinct but non-exclusive axes (Fig. 2): spatial, temporal or self. The first two axes correspond to easily observable and well documented responses to global warming (Parmesan 2006). ÔSelfÕ corresponds to less visibl ...
... species can in theory change, and changes have already been observed, along three distinct but non-exclusive axes (Fig. 2): spatial, temporal or self. The first two axes correspond to easily observable and well documented responses to global warming (Parmesan 2006). ÔSelfÕ corresponds to less visibl ...
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 ...
Coevolution
... No specific associations with ants Many cyanogenic glycosides in their leaves • bullshorn Acacia has evolved a close, mutualistic association with the ants to protect from herbivores (and plant competitors) • cyanogenic glycosides that are found in other species have a defensive role; a role which h ...
... No specific associations with ants Many cyanogenic glycosides in their leaves • bullshorn Acacia has evolved a close, mutualistic association with the ants to protect from herbivores (and plant competitors) • cyanogenic glycosides that are found in other species have a defensive role; a role which h ...
Title Regeneration Processes and Coexistence Mechanisms of Two
... In the first category, many mechanisms maintaining tree species richness have been proposed. I do not review all of them here, but will mention some examples. Ashton (e.g. 1964, 1969, 1976) reponed that species-specific requirements for soil properties are related to tree richness. Connell (1971, 19 ...
... In the first category, many mechanisms maintaining tree species richness have been proposed. I do not review all of them here, but will mention some examples. Ashton (e.g. 1964, 1969, 1976) reponed that species-specific requirements for soil properties are related to tree richness. Connell (1971, 19 ...
Trait selection during food web assembly
... et al. 2011), this might have important implications for the structure of food webs. Furthermore, biological rates are known to strongly vary with temperature (e.g., Rall et al. 2012), and bioenergetic models allow integrating this dependence (Vasseur and McCann 2005). Such models allow investigatin ...
... et al. 2011), this might have important implications for the structure of food webs. Furthermore, biological rates are known to strongly vary with temperature (e.g., Rall et al. 2012), and bioenergetic models allow integrating this dependence (Vasseur and McCann 2005). Such models allow investigatin ...
Bifrenaria
Bifrenaria, abbreviated Bif. in horticultural trade, is a genus of plant in family Orchidaceae. It contains 20 species found in Panama, Trinidad and South America. There are no known uses for them, but their abundant, and at first glance artificial, flowers, make them favorites of orchid growers.The genus can be split in two clearly distinct groups: one of highly robust plants with large flowers, that encompass the first species to be classified under the genus Bifrenaria; other of more delicate plants with smaller flowers occasionally classified as Stenocoryne or Adipe. There are two additional species that are normally classified as Bifrenaria, but which molecular analysis indicate to belong to different orchid groups entirely. One is Bifrenaria grandis which is endemic to Bolívia and which is now placed in Lacaena, and Bifrenaria steyermarkii, an inhabitant of the northern Amazon Forest, which does not have an alternative classification.