Conservation and Sustainable Use of Plant Genetic
... mismanagement and socio-political pressures, and is being permanently eroded or lost; yet the conservation of these resources remain largely neglected by conservation and agricultural agencies. CWR and LR diversity maybe conserved using a range of techniques applied at local, national, regional and ...
... mismanagement and socio-political pressures, and is being permanently eroded or lost; yet the conservation of these resources remain largely neglected by conservation and agricultural agencies. CWR and LR diversity maybe conserved using a range of techniques applied at local, national, regional and ...
Seagrass Literature Review - Department of Environment, Land
... Zostera mulleri and Heterozostera spp. have been the focus of most seagrass research in Victoria. Amphibolis antarctica has received recent attention as a result of the Channel Deepening Project in Port Phillip Bay. Halophila australis, Posidonia australis and Lepilaena marina have been the subject ...
... Zostera mulleri and Heterozostera spp. have been the focus of most seagrass research in Victoria. Amphibolis antarctica has received recent attention as a result of the Channel Deepening Project in Port Phillip Bay. Halophila australis, Posidonia australis and Lepilaena marina have been the subject ...
Substrate specificity of epiphytic communities of diatoms
... between higher plants and microorganisms. Presently, allelopathy is usually mentioned in the negative context. There are many studies on the subject of allelopathy (reviewed in van Donk & van de Bund, 2002; Gross, 2003; and Hilt, 2006). However, they typically focus on a particular plant taxon (e.g ...
... between higher plants and microorganisms. Presently, allelopathy is usually mentioned in the negative context. There are many studies on the subject of allelopathy (reviewed in van Donk & van de Bund, 2002; Gross, 2003; and Hilt, 2006). However, they typically focus on a particular plant taxon (e.g ...
Whole Ecosystem Nitrogen Manipulation Experiments: A
... to be approximately 846 kt N (INDITE 1994). It has been forecast that, due to the penetration of catalysts into the road vehicle fleet, emissions from road vehicles will reduce by 74% between 1998 and 2010. The UK emissions of NOx for 1998 are shown in Figure 1.1. The map was compiled from the NAEI ...
... to be approximately 846 kt N (INDITE 1994). It has been forecast that, due to the penetration of catalysts into the road vehicle fleet, emissions from road vehicles will reduce by 74% between 1998 and 2010. The UK emissions of NOx for 1998 are shown in Figure 1.1. The map was compiled from the NAEI ...
Resource Book for the Preparation of National Plans for
... natural and semi-natural ecosystems, they also play a role in ecosystem functioning and thus in broader environmental sustainability and maintenance of ecosystem services. The particular food security value of CWR has been recognized at least since Darwin discussed their study and conservation (1868 ...
... natural and semi-natural ecosystems, they also play a role in ecosystem functioning and thus in broader environmental sustainability and maintenance of ecosystem services. The particular food security value of CWR has been recognized at least since Darwin discussed their study and conservation (1868 ...
long term study of competition between two co
... Long-term data on co-existing A. astacus and P. leniusculus demonstrate that they cannot live in sympatry without competition in which P. leniusculus with its larger body and chela size, faster growth, more aggressive behaviour and greater fecundity would be the stronger. However, a similar weakenin ...
... Long-term data on co-existing A. astacus and P. leniusculus demonstrate that they cannot live in sympatry without competition in which P. leniusculus with its larger body and chela size, faster growth, more aggressive behaviour and greater fecundity would be the stronger. However, a similar weakenin ...
Allee effects in biological invasions
... 2002). Early work refers to Allee effects as the absence of cooperation (sometimes called disoperation), or simply asociality in sexually reproducing species (Odum & Allee 1954; Philip 1957; Bradford & Philip 1970a,b). Other mechanisms include sex ratio changes, asynchrony in reproductive timing of ...
... 2002). Early work refers to Allee effects as the absence of cooperation (sometimes called disoperation), or simply asociality in sexually reproducing species (Odum & Allee 1954; Philip 1957; Bradford & Philip 1970a,b). Other mechanisms include sex ratio changes, asynchrony in reproductive timing of ...
The importance of predation, cannibalism and resources for
... unique in freshwater ecosystems. Several studies have shown that crayfish can have strong impacts on other benthic organisms through direct and indirect effects. Crayfish can for example totally exclude some species of macrophytes due to intensive grazing. They have also been shown to alter the inve ...
... unique in freshwater ecosystems. Several studies have shown that crayfish can have strong impacts on other benthic organisms through direct and indirect effects. Crayfish can for example totally exclude some species of macrophytes due to intensive grazing. They have also been shown to alter the inve ...
Ingredients for protist coexistence: competition, endosymbiosis and
... experiments with P. bursaria but suggest also that the endosymbiont could have other roles in ciliate coexistence. Moreover, because the symbiosis of P. bursaria and C. vulgaris is facultative, P. bursaria can be freed of its endosymbiont, which allow studying the effect of this endosymbiosis on the ...
... experiments with P. bursaria but suggest also that the endosymbiont could have other roles in ciliate coexistence. Moreover, because the symbiosis of P. bursaria and C. vulgaris is facultative, P. bursaria can be freed of its endosymbiont, which allow studying the effect of this endosymbiosis on the ...
The role of fungal secondary metabolites in Collembola
... terrestrial ecosystems functioning while having to deal in the same time with relentless attacks from fungivores. Only few studies, however, investigated the structuring forces of the population dynamics of fungi and the abundant decomposer fungivores, such as Collembola, with whom they continuously ...
... terrestrial ecosystems functioning while having to deal in the same time with relentless attacks from fungivores. Only few studies, however, investigated the structuring forces of the population dynamics of fungi and the abundant decomposer fungivores, such as Collembola, with whom they continuously ...
Thresholds in Habitat Supply: A Review of the Literature
... or “threshold” change that may have rapid, drastic effects on species or ecosystems. Ecological thresholds involve a change in the rate of response to ecosystem change; a critical value of an ecosystem property at which previously linear or unobserved change becomes a drastic transformation. Around ...
... or “threshold” change that may have rapid, drastic effects on species or ecosystems. Ecological thresholds involve a change in the rate of response to ecosystem change; a critical value of an ecosystem property at which previously linear or unobserved change becomes a drastic transformation. Around ...
The Relative Effects of Grazing By Bison and Cattle on
... Plant species diversity increased and evenness decreased with grazing and with mowing, indicating that competitive release may be more important than herbivore selectivity for determining plant community responses to grazing in the study ecosystem. For the most part, grazing by bison and cattle also ...
... Plant species diversity increased and evenness decreased with grazing and with mowing, indicating that competitive release may be more important than herbivore selectivity for determining plant community responses to grazing in the study ecosystem. For the most part, grazing by bison and cattle also ...
Ecology and Natural History of a Neotropical Savanna
... of all publications assembled, ranging from less than five papers in 1990 to about 35 papers per year in the late 1990s (see fig. 1.2A). This burst of biological research on the cerrados results from the founding of the first ecologically oriented graduate programs in Brazil in the 1970s. Some of th ...
... of all publications assembled, ranging from less than five papers in 1990 to about 35 papers per year in the late 1990s (see fig. 1.2A). This burst of biological research on the cerrados results from the founding of the first ecologically oriented graduate programs in Brazil in the 1970s. Some of th ...
2010 7th SER Conference of the Society for Ecological
... Significant projects of restoration are starting. Nevertheless, a considerable amount of work is still needed to integrate them in the life of the local populations and make them sustainable ecologically and economically. The objectives of this conference are thus to multiply the contacts between res ...
... Significant projects of restoration are starting. Nevertheless, a considerable amount of work is still needed to integrate them in the life of the local populations and make them sustainable ecologically and economically. The objectives of this conference are thus to multiply the contacts between res ...
ECOLOGICAL RESTORATION AND SUSTAINABLE
... Significant projects of restoration are starting. Nevertheless, a considerable amount of work is still needed to integrate them in the life of the local populations and make them sustainable ecologically and economically. The objectives of this conference are thus to multiply the contacts between res ...
... Significant projects of restoration are starting. Nevertheless, a considerable amount of work is still needed to integrate them in the life of the local populations and make them sustainable ecologically and economically. The objectives of this conference are thus to multiply the contacts between res ...
Differences in feeding adaptations in intertidal and
... CR = V Loge C0 −Loge Ct − a /t where V is the volume of suspension, C0 is the initial concentration, Ct is the final concentration, a is the rate at which particle concentration changed in the control suspension, and t is the duration of the experiment. At the end of the CR experiments, all snails w ...
... CR = V Loge C0 −Loge Ct − a /t where V is the volume of suspension, C0 is the initial concentration, Ct is the final concentration, a is the rate at which particle concentration changed in the control suspension, and t is the duration of the experiment. At the end of the CR experiments, all snails w ...
The Influence of Interspecific Competition and Other Factors on the
... Other factors which may have inifluencedthe distribution were also studied. The study was made at Millport, Isle of Cumbrae, Scotland. I would like to thank Prof. C. M. Yonge and the staff of the Marine Station, Millport, for their help, discussions and encouragement during the course of this work. ...
... Other factors which may have inifluencedthe distribution were also studied. The study was made at Millport, Isle of Cumbrae, Scotland. I would like to thank Prof. C. M. Yonge and the staff of the Marine Station, Millport, for their help, discussions and encouragement during the course of this work. ...
Thorns Starfish (Acanthaster planci)
... Research on predation of A. planci is driven by the third hypothesis, the predatorremoval hypothesis. The predator removal hypothesis states that A. planci populations are naturally regulated by predation of adult and juvenile A. planci by fish and invertebrates (Pratchett et al., 2014; Rivera-Posad ...
... Research on predation of A. planci is driven by the third hypothesis, the predatorremoval hypothesis. The predator removal hypothesis states that A. planci populations are naturally regulated by predation of adult and juvenile A. planci by fish and invertebrates (Pratchett et al., 2014; Rivera-Posad ...
predation of juvenile crassostrea virginica by two species of mud
... have a significant influence on survivorship of juvenile oysters. To assess the relative contribution E. depressus and R. harrisii have on spat mortality, results were compared with predation rates of two other important crab predators of spat: C. sapidus and P. herbstii. Daily predation rates by C. s ...
... have a significant influence on survivorship of juvenile oysters. To assess the relative contribution E. depressus and R. harrisii have on spat mortality, results were compared with predation rates of two other important crab predators of spat: C. sapidus and P. herbstii. Daily predation rates by C. s ...
GFNMS Vulnerability Assessment
... The Office of National Marine Sanctuaries, part of the National Oceanic and Atmospheric Administration, serves as the trustee for a system of 14 marine protected areas encompassing more than 170,000 square miles of ocean and Great Lakes waters. The 13 national marine sanctuaries and one marine natio ...
... The Office of National Marine Sanctuaries, part of the National Oceanic and Atmospheric Administration, serves as the trustee for a system of 14 marine protected areas encompassing more than 170,000 square miles of ocean and Great Lakes waters. The 13 national marine sanctuaries and one marine natio ...
EDGE EFFECT INTERACTIONS IN AN AFRICAN SAVANNA By
... of edges at a broader or coarser scale (e.g., predicting the effects of forest fragmentation on the abundance of an endangered forest specialist). In many cases focal land cover types are studied across a gradient from highly intact to highly fragmented (e.g., Lofman 2007). Although edges become muc ...
... of edges at a broader or coarser scale (e.g., predicting the effects of forest fragmentation on the abundance of an endangered forest specialist). In many cases focal land cover types are studied across a gradient from highly intact to highly fragmented (e.g., Lofman 2007). Although edges become muc ...
Ontogenetic Shifts and Symbiont Succession in a
... succession in which symbionts colonize and become extirpated during particular life stages of the host (Fonseca and Benson 2003). Alternatively, symbiont populations could disappear for other reasons (e.g., disease, active removal by host, changes in environmental conditions) leaving a host open to ...
... succession in which symbionts colonize and become extirpated during particular life stages of the host (Fonseca and Benson 2003). Alternatively, symbiont populations could disappear for other reasons (e.g., disease, active removal by host, changes in environmental conditions) leaving a host open to ...
Assessment of risks to Norwegian biodiversity from the import
... accompanying organisms such as pathogens and parasites, and (4) the likelihood of escape or release of the imported organisms and precautionary measures that could prevent this from happening. The committee was asked to adopt a fifty year perspective in this assessment. Furthermore, any known negati ...
... accompanying organisms such as pathogens and parasites, and (4) the likelihood of escape or release of the imported organisms and precautionary measures that could prevent this from happening. The committee was asked to adopt a fifty year perspective in this assessment. Furthermore, any known negati ...