Reid
... For example, the International Council for Bird Preservation (ICBP), now known as BirdLife International, mapped the distribution of land bird species with range sizes less than 50 000 km2 and subsequently identified 221 areas that contained at least two restricted-range species. These areas account ...
... For example, the International Council for Bird Preservation (ICBP), now known as BirdLife International, mapped the distribution of land bird species with range sizes less than 50 000 km2 and subsequently identified 221 areas that contained at least two restricted-range species. These areas account ...
Using object-based segmentation to identify invasive species in
... this can’t be known for sure. Classification results aiming to separate invasive species from the surrounding area were conclusive for the Japanese knotweed image, but could be improved for the common reed image. Figures 2–4 show the object-based segmentation process seeking to identify Japanese kno ...
... this can’t be known for sure. Classification results aiming to separate invasive species from the surrounding area were conclusive for the Japanese knotweed image, but could be improved for the common reed image. Figures 2–4 show the object-based segmentation process seeking to identify Japanese kno ...
MEECE Fact Sheet: MSFD Descriptor 2. Non
... was proposed for aquatic ecosystems (Olenin et al. 2007). The index is based on the classification of the abundance and distribution range of NIS and the assessment of the magnitude of their impacts on native communities, habitats and ecosystem functioning. BPL ranges from 0 (“no measurable impact”) ...
... was proposed for aquatic ecosystems (Olenin et al. 2007). The index is based on the classification of the abundance and distribution range of NIS and the assessment of the magnitude of their impacts on native communities, habitats and ecosystem functioning. BPL ranges from 0 (“no measurable impact”) ...
Murrakool Wildlife
... entire study – is Australia’s rarest and most threatened resident waterbird (p12). They are known to have declined significantly in recent decades and are now only recorded at around ten sites each year across the country. This striking, unusual and often secretive shorebird relies on a delicate bala ...
... entire study – is Australia’s rarest and most threatened resident waterbird (p12). They are known to have declined significantly in recent decades and are now only recorded at around ten sites each year across the country. This striking, unusual and often secretive shorebird relies on a delicate bala ...
Food Niche Overlaps in a Winter Community of Predators in the
... The raccoon-dog's (a newcomer in the community) scavenging habits seem to be even more strongly pronounced. The generalistic diet of the raccoon-dog certainly promotes its colonizing of new ranges and may also, as it was in the case of the red fox, lead to the sinurbization of this species in the ne ...
... The raccoon-dog's (a newcomer in the community) scavenging habits seem to be even more strongly pronounced. The generalistic diet of the raccoon-dog certainly promotes its colonizing of new ranges and may also, as it was in the case of the red fox, lead to the sinurbization of this species in the ne ...
Ecological Equivalence: A Realistic Assumption for Niche Theory as
... extended to simulate the drift of species invasions that sustains the dynamics of recruitment following deaths and extinctions amongst multiple species of dominants and fugitives. The same principle of trade-offs in character traits conversely allows a sexually reproducing species to withstand invas ...
... extended to simulate the drift of species invasions that sustains the dynamics of recruitment following deaths and extinctions amongst multiple species of dominants and fugitives. The same principle of trade-offs in character traits conversely allows a sexually reproducing species to withstand invas ...
Intraspecific competition
... very similar species. By examining both the costs and the benefits, we show that harshness alone does not lessen the importance of species interactions or limit their role in community structure. Species coexistence requires niche differences, and harshness does not in itself make coexistence more l ...
... very similar species. By examining both the costs and the benefits, we show that harshness alone does not lessen the importance of species interactions or limit their role in community structure. Species coexistence requires niche differences, and harshness does not in itself make coexistence more l ...
Introductory Research Essay
... leaves (browsers). Intermediate types varied between these two types of forage. Hofmann (1989) suggested physiological adaptations that were underlying the differences in food-type selection and he gave them new, perhaps more relevant, names (Figure 1). Grass/roughage eaters are capable of toleratin ...
... leaves (browsers). Intermediate types varied between these two types of forage. Hofmann (1989) suggested physiological adaptations that were underlying the differences in food-type selection and he gave them new, perhaps more relevant, names (Figure 1). Grass/roughage eaters are capable of toleratin ...
Redwoods—Responsibilities for a Long
... redwoods running from Monterey to Del Norte Counties in Northern California. Fossil evidence indicates that redwoods have been around for at least 130 million years and once had a distribution across much of the Northern Hemisphere. The historic redwood range was reduced through natural causes such ...
... redwoods running from Monterey to Del Norte Counties in Northern California. Fossil evidence indicates that redwoods have been around for at least 130 million years and once had a distribution across much of the Northern Hemisphere. The historic redwood range was reduced through natural causes such ...
Intertidal Zone Field Guide
... from Queensland University (2012) found that the average temperature difference between above rocks and below rocks differed by 5.5 degrees Celsius. The temperature below the rocks remained within narrow limits to the temperature of the water during high tide. The organisms in this document are orga ...
... from Queensland University (2012) found that the average temperature difference between above rocks and below rocks differed by 5.5 degrees Celsius. The temperature below the rocks remained within narrow limits to the temperature of the water during high tide. The organisms in this document are orga ...
High Conservation Value Forest Assessment in the Alberta
... useful indicators of forest and lake management. The bat is known to be associated with riparian oldgrowth forest; the woodpecker is known to be associated with old-growth and recent burns and is susceptible to fire suppression and salvage logging; the pelican is a good indicator of lake management ...
... useful indicators of forest and lake management. The bat is known to be associated with riparian oldgrowth forest; the woodpecker is known to be associated with old-growth and recent burns and is susceptible to fire suppression and salvage logging; the pelican is a good indicator of lake management ...
Victorian Volcanic Plain - Natural Resources South Australia
... Most of the region in South Australia has been cleared for agriculture except for small sections of eucalypt forest and woodlands, healthy shrublands and sedgelands. The bioregion has a number of extinct volcanoes, some with large lakes or wetlands in their crates. Native vegetation in the bioregion ...
... Most of the region in South Australia has been cleared for agriculture except for small sections of eucalypt forest and woodlands, healthy shrublands and sedgelands. The bioregion has a number of extinct volcanoes, some with large lakes or wetlands in their crates. Native vegetation in the bioregion ...
The Impacts of Invasive Plant Species on Human Health
... 2008). As the botanical composition of a region loses its individual characteristics, and becomes more homogenized by cosmopolitan species, then social identity/sense of place also change (Bardsley and Edward-‐Jon ...
... 2008). As the botanical composition of a region loses its individual characteristics, and becomes more homogenized by cosmopolitan species, then social identity/sense of place also change (Bardsley and Edward-‐Jon ...
Session 7: Bush encroachment I
... study site, although their basal cover and biomass did decrease under dense tree cover. Overall, we found that the local tree effects were generally negative (reduced light, equal or lower soil moisture, lower ANPP) and that this scaled up to the landscape scale, though in some cases to a greater de ...
... study site, although their basal cover and biomass did decrease under dense tree cover. Overall, we found that the local tree effects were generally negative (reduced light, equal or lower soil moisture, lower ANPP) and that this scaled up to the landscape scale, though in some cases to a greater de ...
ImprovIng the effectIveness and effIcIency
... strategies, agencies should be prepared to adjust their specific level of risk-tolerance after considering both the possible consequences of failure and the benefits of success. Decisions on wildlife conservation must often be made with incomplete and imperfect information. Frequently, data on impor ...
... strategies, agencies should be prepared to adjust their specific level of risk-tolerance after considering both the possible consequences of failure and the benefits of success. Decisions on wildlife conservation must often be made with incomplete and imperfect information. Frequently, data on impor ...
Сажина, Е. В. Тексты для чтения и обсуждения
... recover from past land use practices and develop into their fullest expression as a diverse and mature ecosystem. Also, the «500 Years Plan» acknowledges the human commitment necessary to preserve, protect, and restore the Earth Sanctuary landscape over the long term. This commitment is being accomp ...
... recover from past land use practices and develop into their fullest expression as a diverse and mature ecosystem. Also, the «500 Years Plan» acknowledges the human commitment necessary to preserve, protect, and restore the Earth Sanctuary landscape over the long term. This commitment is being accomp ...
Basins of attraction for species extinction and coexistence in spatial
... where R, S, and P denote individuals from the three species, respectively. Relation 共1兲 describes the cyclic selection, i.e., prey, which occurs at the rate u. Relations 共2兲 and 共3兲 define two types of motions of individuals on the lattice at the rate s, and relation 共4兲 characterizes the reproducti ...
... where R, S, and P denote individuals from the three species, respectively. Relation 共1兲 describes the cyclic selection, i.e., prey, which occurs at the rate u. Relations 共2兲 and 共3兲 define two types of motions of individuals on the lattice at the rate s, and relation 共4兲 characterizes the reproducti ...
Prey is a term used to describe animals that are hunted and killed by
... interactions with the biotic and abiotic factors of its environment. Biotic factors are living things, while abiotic factors are nonliving things. It is advantageous for a species to occupy a unique niche in an ecosystem because it reduces the amount of competition for resources that species will ...
... interactions with the biotic and abiotic factors of its environment. Biotic factors are living things, while abiotic factors are nonliving things. It is advantageous for a species to occupy a unique niche in an ecosystem because it reduces the amount of competition for resources that species will ...
What are Invasive Species?
... Costs to natural systems, although not easily translated into dollars, are staggering and diverse. Perhaps the greatest impacts are caused by plant species that come to dominate entire ecosystems. Melaleuca, which is increasing its range in south Florida by some 35 acres each day, replaces cypress a ...
... Costs to natural systems, although not easily translated into dollars, are staggering and diverse. Perhaps the greatest impacts are caused by plant species that come to dominate entire ecosystems. Melaleuca, which is increasing its range in south Florida by some 35 acres each day, replaces cypress a ...
Herpetological Review Natural History Notes Formatting Guidelines
... in an attempt to standardize key words used for other notes about a similar topic. The section’s intent is to convey information rather than demonstrate prose. A common problem is inclusion of extraneous information. Use of figures is encouraged but they should replace words rather than embellish th ...
... in an attempt to standardize key words used for other notes about a similar topic. The section’s intent is to convey information rather than demonstrate prose. A common problem is inclusion of extraneous information. Use of figures is encouraged but they should replace words rather than embellish th ...
Role of biological disturbance in maintaining diversity in the deep sea
... everything that is sufficiently smaller than itself unless that food item employs avoidance. Even the smallest meiofaunal animal is cropping bacteria. There would be croppers available to harvest the complete resource spectrum, from sporadic, highyield food to relatively constant, low-yield foods; f ...
... everything that is sufficiently smaller than itself unless that food item employs avoidance. Even the smallest meiofaunal animal is cropping bacteria. There would be croppers available to harvest the complete resource spectrum, from sporadic, highyield food to relatively constant, low-yield foods; f ...
Why plankton communities have no equilibrium: solutions to the
... because, as discussed further in the next section, feedback in the plankton system itself generates complex dynamics preventing the system from coming to rest. Consequently, what we see in real lakes may well be the behavior of an intrinsically chaotic system in a fluctuating environment. It may be ...
... because, as discussed further in the next section, feedback in the plankton system itself generates complex dynamics preventing the system from coming to rest. Consequently, what we see in real lakes may well be the behavior of an intrinsically chaotic system in a fluctuating environment. It may be ...
Evolution of stabilising weak links in food webs
... Ecosystems are a classic example of complexity[6], being formed from a myriad of interactions between various species. The mathematical study of ecosystems has a long history[1-11], dating back to the work of Lotka and Volterra[7,8]. Such models tread a delicate balance between including so much det ...
... Ecosystems are a classic example of complexity[6], being formed from a myriad of interactions between various species. The mathematical study of ecosystems has a long history[1-11], dating back to the work of Lotka and Volterra[7,8]. Such models tread a delicate balance between including so much det ...
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.