Flexible filter feeders van Walraven, Lodewijk
... numbing the hands of the fishermen that had to remove them. On their origin he remarked “When they die they turn to water again, from which they originated”. Probably the earliest study of the seasonal patterns and abundance of jellyfish along the Dutch coast was by Van Deinse (1924) who counted the ...
... numbing the hands of the fishermen that had to remove them. On their origin he remarked “When they die they turn to water again, from which they originated”. Probably the earliest study of the seasonal patterns and abundance of jellyfish along the Dutch coast was by Van Deinse (1924) who counted the ...
17. A brief history of the Megapodes (Megapodiidae)
... Some galliform fossils from late Eocene and early Miocene deposits in France were initially thought to be primitive representatives of the megapodes, hence the name Quercymegapodiidae after Quercy, one of the sites at which they were found (Mourer-Chauviré 1992). Subsequently, additional species wer ...
... Some galliform fossils from late Eocene and early Miocene deposits in France were initially thought to be primitive representatives of the megapodes, hence the name Quercymegapodiidae after Quercy, one of the sites at which they were found (Mourer-Chauviré 1992). Subsequently, additional species wer ...
managing fisheries effects on marine food webs
... krill fishery on krill predators may be difficult to detect because of spatial and temporal variability in the dynamics of this ecosystem (Murphy et al., 1988; Constable and Nicol, 2002; Constable et al., 2003), potential shifts in predator diet depending on availability of prey (see, e.g., Agnew et a ...
... krill fishery on krill predators may be difficult to detect because of spatial and temporal variability in the dynamics of this ecosystem (Murphy et al., 1988; Constable and Nicol, 2002; Constable et al., 2003), potential shifts in predator diet depending on availability of prey (see, e.g., Agnew et a ...
Abundance and Habitat Use of Nearctic Shorebirds in the Highland
... lakes (Roesler et al. 2012), including the big Strobel Lake, with a large amount of potential habitat that was not covered in our study. An interesting result was that the highland plateau lakes seem to be sites of special importance for Baird’s Sandpiper and Wilson’s Phalarope, given their high abu ...
... lakes (Roesler et al. 2012), including the big Strobel Lake, with a large amount of potential habitat that was not covered in our study. An interesting result was that the highland plateau lakes seem to be sites of special importance for Baird’s Sandpiper and Wilson’s Phalarope, given their high abu ...
Genetic diversity
... protects endangered species by banning international transport of their body parts • Convention on Biological Diversity (1992) – - Seeks to conserve biodiversity - Use biodiversity in a sustainable manner - Ensure the fair distribution of biodiversity’s benefits - By 2007, 188 nations had signed on ...
... protects endangered species by banning international transport of their body parts • Convention on Biological Diversity (1992) – - Seeks to conserve biodiversity - Use biodiversity in a sustainable manner - Ensure the fair distribution of biodiversity’s benefits - By 2007, 188 nations had signed on ...
Effects of Plant Traits on Ecosystem and Regional
... mitigate undesirable future changes in our planet. In this paper, I present a general framework for understanding the mechanisms by which the traits characteristic of particular plant species or functional types affect ecosystem and regional processes. I emphasize those effects that in¯uence process ...
... mitigate undesirable future changes in our planet. In this paper, I present a general framework for understanding the mechanisms by which the traits characteristic of particular plant species or functional types affect ecosystem and regional processes. I emphasize those effects that in¯uence process ...
Biological interactions in fish stocks: models and reality
... than MULTSPEC, for example as regards components included in the model, types of data which can be utilized and likelihood functions. The ECOPATH and ECOSIM models (Walters et al. 1997) consider all components of the ecosystem (not just a selection as for example MULTSPEC) in a holistic way. The for ...
... than MULTSPEC, for example as regards components included in the model, types of data which can be utilized and likelihood functions. The ECOPATH and ECOSIM models (Walters et al. 1997) consider all components of the ecosystem (not just a selection as for example MULTSPEC) in a holistic way. The for ...
A hierarchical deductive approach for functional types in disturbed
... most models of vegetation dynamics examining the interactions between plant life histories and the spatial and temporal variability of the environment, especially through disturbance, have considered at least two levels, the local community where successional dynamics is proceeding, and the landscap ...
... most models of vegetation dynamics examining the interactions between plant life histories and the spatial and temporal variability of the environment, especially through disturbance, have considered at least two levels, the local community where successional dynamics is proceeding, and the landscap ...
Marine and Reef Janitors - Kieron Dodds
... to accept. Without nutrients available for their growth, nuisance organisms, like other organisms, will not survive. Removing detritus in some way, before it is available to these nuisance organisms, which are most often algae and cyanobacteria, is one approach to controlling or eliminating those or ...
... to accept. Without nutrients available for their growth, nuisance organisms, like other organisms, will not survive. Removing detritus in some way, before it is available to these nuisance organisms, which are most often algae and cyanobacteria, is one approach to controlling or eliminating those or ...
Document
... III.5.4.1 Polyploidisation facilitates speciation by hybridization. III.6 Mutations can be divided into positive, negative and selectively neutral in terms of their impact on the biological fitness of organisms. III.7 With respect to their cause, mutations are spontaneous or induced. III.8 Evolution ...
... III.5.4.1 Polyploidisation facilitates speciation by hybridization. III.6 Mutations can be divided into positive, negative and selectively neutral in terms of their impact on the biological fitness of organisms. III.7 With respect to their cause, mutations are spontaneous or induced. III.8 Evolution ...
A Unique Mutualism: Seed Dispersal and Primate Self
... in work done by Kunz and Linsenmair (2007). They aimed to provide evidence that seed-swallowing is not speciesspecific, but rather a commonality amongst many primates. This study looked at Papio anubis, known more commonly as the olive baboon, which were studied in the field at Comoé National Park ( ...
... in work done by Kunz and Linsenmair (2007). They aimed to provide evidence that seed-swallowing is not speciesspecific, but rather a commonality amongst many primates. This study looked at Papio anubis, known more commonly as the olive baboon, which were studied in the field at Comoé National Park ( ...
Research frontiers in null model analysis
... and the spatial scale at which the data were collected. For these sorts of null models, many of the innovations have come from ecologists and biogeographers, rather than from statisticians. Constructing and testing a null model is straightforward in theory and closely resembles hypothesis testing in ...
... and the spatial scale at which the data were collected. For these sorts of null models, many of the innovations have come from ecologists and biogeographers, rather than from statisticians. Constructing and testing a null model is straightforward in theory and closely resembles hypothesis testing in ...
Climate Change and Fish Communities: A Conceptual Framework
... likely to operate in an altered climate. The framework presented here is based on the view that ecological communities are open systems; patterns and processes observed in local assemblages are determined not only by local, contemporary mechanisms acting within assemblages, but also result from proc ...
... likely to operate in an altered climate. The framework presented here is based on the view that ecological communities are open systems; patterns and processes observed in local assemblages are determined not only by local, contemporary mechanisms acting within assemblages, but also result from proc ...
Does interspecific territoriality reflect the
... misidentification of species. For example, the observation that territory holders exclude heterospecific intruders whose size and/or colour patterns are strikingly different from those of conspecific intruders (e.g. Reed, 1982; Martin et al., 1996) indicates that species misidentification is not ade ...
... misidentification of species. For example, the observation that territory holders exclude heterospecific intruders whose size and/or colour patterns are strikingly different from those of conspecific intruders (e.g. Reed, 1982; Martin et al., 1996) indicates that species misidentification is not ade ...
Predicting Extinction Risk of Brazilian Atlantic Forest
... to stress tolerance (Grime 1977; Arendt 1997; Fonseca et al. 2000). Thus, growth forms adapted to stressful microhabitats, such as some epiphytes and herbs restricted to rocky outcrops, exhibit inherently low growth rates (Grime & Hunt 1975; Benzing 1990). For instance, growth rates of some epiphyte ...
... to stress tolerance (Grime 1977; Arendt 1997; Fonseca et al. 2000). Thus, growth forms adapted to stressful microhabitats, such as some epiphytes and herbs restricted to rocky outcrops, exhibit inherently low growth rates (Grime & Hunt 1975; Benzing 1990). For instance, growth rates of some epiphyte ...
Bergmann`s rule and the mammal fauna of northern North America
... species show different spatial patterns of body size variation. We then attempt to explain the spatial variation in terms of environmental variation, and evaluate the adequacy of our analyses to account for the spatial pattern using the residuals arising from our environmental models. Finally, we us ...
... species show different spatial patterns of body size variation. We then attempt to explain the spatial variation in terms of environmental variation, and evaluate the adequacy of our analyses to account for the spatial pattern using the residuals arising from our environmental models. Finally, we us ...
Chapter 14: Conserving Biodiversity
... 14.1 The Sixth Extinction Habitat destruction not limited to rainforests Freshwater lakes and streams, grasslands, and temperate forests are also threatened If worldwide habitat destruction continues at present rate, as many as 25% of all world’s species could become extinct in 50 years ...
... 14.1 The Sixth Extinction Habitat destruction not limited to rainforests Freshwater lakes and streams, grasslands, and temperate forests are also threatened If worldwide habitat destruction continues at present rate, as many as 25% of all world’s species could become extinct in 50 years ...
Species loss and the structure and functioning of multitrophic
... typical trophic role of the species (for example, a herbivore might appear as a top consumer simply because it is not consumed in a particular web). Thirdly, the food web data in particular have considerable variation in resolution, both of links and taxa, which is not independent of trophic positio ...
... typical trophic role of the species (for example, a herbivore might appear as a top consumer simply because it is not consumed in a particular web). Thirdly, the food web data in particular have considerable variation in resolution, both of links and taxa, which is not independent of trophic positio ...
Plant functional traits and the multidimensional nature of species
... stabilizing niche differences (1 −ρÞ and average fitness differences ðκ j =κ i Þ between species pairs in our study. Finally, we tested how trait differences related to the predicted outcome of competition. For most of the functional traits we sampled, species differences in individual traits were w ...
... stabilizing niche differences (1 −ρÞ and average fitness differences ðκ j =κ i Þ between species pairs in our study. Finally, we tested how trait differences related to the predicted outcome of competition. For most of the functional traits we sampled, species differences in individual traits were w ...
0213187 COVER SHEET FOR PROPOSAL TO THE NATIONAL SCIENCE FOUNDATION PD 98-1128 01/10/02
... The search for patterns of community assembly has occupied the last 25 years in community ecology and remains controversial today. A commonly sought assembly rule is that species coexistence in communities will be enhanced by differences in traits related to competition for limiting resources (i.e., ...
... The search for patterns of community assembly has occupied the last 25 years in community ecology and remains controversial today. A commonly sought assembly rule is that species coexistence in communities will be enhanced by differences in traits related to competition for limiting resources (i.e., ...
15_soft-sediment ecology
... distribution and abundance of species • biotic interactions are important, mainly predation, facilitation, and biotic disturbance • humans have a variety of impacts on soft-sediment ...
... distribution and abundance of species • biotic interactions are important, mainly predation, facilitation, and biotic disturbance • humans have a variety of impacts on soft-sediment ...
Comparison of the effects of artificial and natural barriers on large
... Abstract: Physical barriers contribute to habitat fragmentation, influence species distribution and ranging behaviour, and impact long-term population viability. Barrier permeability varies among species and can potentially impact the competitive balance within animal communities by differentially a ...
... Abstract: Physical barriers contribute to habitat fragmentation, influence species distribution and ranging behaviour, and impact long-term population viability. Barrier permeability varies among species and can potentially impact the competitive balance within animal communities by differentially a ...
Contrasted associations between seabirds and marine mammals
... wake during the whole study period. Finally, since no distinction was made during a 10-min scan in the notation of birds whether or not they were foraging with marine mammals, it was not possible to know how many birds were indeed associated with a marine mammal sighting, which would make using the ...
... wake during the whole study period. Finally, since no distinction was made during a 10-min scan in the notation of birds whether or not they were foraging with marine mammals, it was not possible to know how many birds were indeed associated with a marine mammal sighting, which would make using the ...
Biodiversity of Rangelands - Society For Range Management
... Information is available on many rare vascular plant and vertebrate species and where they are located, but there is a lack of similar data on invertebrate animals, non-vascular plants and microbes. An inventory of these ...
... Information is available on many rare vascular plant and vertebrate species and where they are located, but there is a lack of similar data on invertebrate animals, non-vascular plants and microbes. An inventory of these ...
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.