Interspecific Competition Between Two Invasive Species of
... et al. 1989, Barrera 1996), rather than composite measures of population growth. Any single Þtness component is unlikely to provide an accurate evaluation of competitive ability (Grill and Juliano 1996). Composite indices of performance (Livdahl 1982, Juliano 1998) combine individual Þtness paramete ...
... et al. 1989, Barrera 1996), rather than composite measures of population growth. Any single Þtness component is unlikely to provide an accurate evaluation of competitive ability (Grill and Juliano 1996). Composite indices of performance (Livdahl 1982, Juliano 1998) combine individual Þtness paramete ...
The Mutualistic Niche
... species occupy only a subset of their potential (or fundamental) niche space and termed this phenomenon the realized niche (Hutchinson 1957, Pulliam 2000) (Figure 1a). Most commonly, the fundamental niche is defined in terms of abiotic properties of the environment (Pulliam 2000, Warren et al. 2014) ...
... species occupy only a subset of their potential (or fundamental) niche space and termed this phenomenon the realized niche (Hutchinson 1957, Pulliam 2000) (Figure 1a). Most commonly, the fundamental niche is defined in terms of abiotic properties of the environment (Pulliam 2000, Warren et al. 2014) ...
Globins in Nonvertebrate Species: Dispersal by Horizontal Gene
... various highly specialized functions known at present. During this evolutionary process, we suggest that (1) high oxygen affinity may have been acquired repeatedly and (2) the formation of chimeric proteins containing both a globin and a flavin binding domain was an additional and distinct evolution ...
... various highly specialized functions known at present. During this evolutionary process, we suggest that (1) high oxygen affinity may have been acquired repeatedly and (2) the formation of chimeric proteins containing both a globin and a flavin binding domain was an additional and distinct evolution ...
vernal pool fairy shrimp - Solano County Water Agency
... absence of the vernal pool fairy shrimp in certain habitats is explained by competitive exclusion by other fairy shrimp (Helm 1998, Eriksen and Belk 1999). While not typically in the same pools, the vernal pool fairy shrimp occupies the same vernal pool habitats as the delta green ground beetle, and ...
... absence of the vernal pool fairy shrimp in certain habitats is explained by competitive exclusion by other fairy shrimp (Helm 1998, Eriksen and Belk 1999). While not typically in the same pools, the vernal pool fairy shrimp occupies the same vernal pool habitats as the delta green ground beetle, and ...
pdf
... Model simulations, supported by experimental data, showed that the effect of BT on growth is inversely related to clam size, indicating that juveniles are more vulnerable to negative effects of BT than adults. Additionally, the main period of hard clam larval production in GSB as determined in a pre ...
... Model simulations, supported by experimental data, showed that the effect of BT on growth is inversely related to clam size, indicating that juveniles are more vulnerable to negative effects of BT than adults. Additionally, the main period of hard clam larval production in GSB as determined in a pre ...
University of Groningen Herbivores, resources and risks
... resources as herbivores are regulated by predators [5,12]. Previous research has elucidated the complexity of trophic interactions by breaking each trophic level into more fundamental components (Figure 1). Specifically, the roles of abiotic factors, disturbances, quality and quantity of primary pro ...
... resources as herbivores are regulated by predators [5,12]. Previous research has elucidated the complexity of trophic interactions by breaking each trophic level into more fundamental components (Figure 1). Specifically, the roles of abiotic factors, disturbances, quality and quantity of primary pro ...
The Decimation of Endemic Hawaiian Tree
... snails present on each visit. Finally, the estiFor Smax = 21.96, Sbirth = 4.64, b = 0.003068, mated "real numbers" of newborn snails and t in days. This formula was used to per visit were summed over a 12-month establish the size ranges of each year class. period, and this sum was divided by the Mar ...
... snails present on each visit. Finally, the estiFor Smax = 21.96, Sbirth = 4.64, b = 0.003068, mated "real numbers" of newborn snails and t in days. This formula was used to per visit were summed over a 12-month establish the size ranges of each year class. period, and this sum was divided by the Mar ...
The Green and Golden Bell Frog Parramatta Key Population
... strategically treated as the ‘Parramatta’ key populations, whilst recognising their distinct and likely isolated elements. This Parramatta GGBF Management Plan has been prepared to ensure that the key populations occurring in the Parramatta area are successfully managed and monitored such that the s ...
... strategically treated as the ‘Parramatta’ key populations, whilst recognising their distinct and likely isolated elements. This Parramatta GGBF Management Plan has been prepared to ensure that the key populations occurring in the Parramatta area are successfully managed and monitored such that the s ...
Colonization of artificial seagrass versus time and distance from
... To compare community composition between various times of collection in the colonization rate experiment, 2 similarity indices were used. Serrensen's (1948) Quotient of Similarity (QS) is a qualitative, presence/ absence index which compares species composition, measured as mean percent of species c ...
... To compare community composition between various times of collection in the colonization rate experiment, 2 similarity indices were used. Serrensen's (1948) Quotient of Similarity (QS) is a qualitative, presence/ absence index which compares species composition, measured as mean percent of species c ...
History and Impact of Gypsy Moth in North America and Comparison
... In 1890, the State of Massachusetts appropriated funds to exterminate the pest which at that time infested an area of 2539 km2 and encompassed 30 cities and towns. Control efforts were so successful that by 1899, little defoliation was detected and only a few moths were found. Therefore, further con ...
... In 1890, the State of Massachusetts appropriated funds to exterminate the pest which at that time infested an area of 2539 km2 and encompassed 30 cities and towns. Control efforts were so successful that by 1899, little defoliation was detected and only a few moths were found. Therefore, further con ...
The impact of herbicides on weed abundance and biodiversity PN0940
... In considering non-target plants within arable fields, the majority of plant species that are found are of only minor concern to farmers, unless present at high population density. Under horticultural conditions, it can be argued that all weeds are targets, providing some difficulty for formal risk ...
... In considering non-target plants within arable fields, the majority of plant species that are found are of only minor concern to farmers, unless present at high population density. Under horticultural conditions, it can be argued that all weeds are targets, providing some difficulty for formal risk ...
Does multiple seed loading in Blue Jays result in selective dispersal
... arrived at the feeder, each observer selected a focal animal to observe and recorded the number of acorns removed from the tray on each visit, whether the acorns were consumed or cached, and the general location where the jays moved to consume or cache the acorns. Because jays were not marked and ja ...
... arrived at the feeder, each observer selected a focal animal to observe and recorded the number of acorns removed from the tray on each visit, whether the acorns were consumed or cached, and the general location where the jays moved to consume or cache the acorns. Because jays were not marked and ja ...
Jelly bellicus lab booklet jelly_bellicus_lab.booklet.2011
... Captain Dan and his crew were sailing from South America to Australia when they encountered a severe storm. The ship tossed in the sea for days before coming to rest on an island somewhere in the South Pacific. The ship was badly damaged and most of the supplies had fallen overboard during the storm ...
... Captain Dan and his crew were sailing from South America to Australia when they encountered a severe storm. The ship tossed in the sea for days before coming to rest on an island somewhere in the South Pacific. The ship was badly damaged and most of the supplies had fallen overboard during the storm ...
Dinger EC, Hendrickson DA, Winsborough BM, Marks JC (2006)
... There were also significant differences in invertebrate assemblages between exclusion of all fish and exclusion of large fish, but there were no significant differences between large fish exclosures and large fish cage controls (Table 2). Furthermore, changes in invertebrate assemblages were reflected in cha ...
... There were also significant differences in invertebrate assemblages between exclusion of all fish and exclusion of large fish, but there were no significant differences between large fish exclosures and large fish cage controls (Table 2). Furthermore, changes in invertebrate assemblages were reflected in cha ...
Applying stable isotopes to examine foodweb structure: an overview
... ratio of sulphur isotopes (δ 34 S) varies substantially among primary producers, but changes relatively little with progression through a food web, and also can be used to identify important resource pools. This has proven especially insightful in marine systems where the sulphur cycle often gives r ...
... ratio of sulphur isotopes (δ 34 S) varies substantially among primary producers, but changes relatively little with progression through a food web, and also can be used to identify important resource pools. This has proven especially insightful in marine systems where the sulphur cycle often gives r ...
Ecological monitoring in Cambridge Bay
... these model organisms, we can make inferences about the entire ecosystem without needing to study every component individually (Danks 1992, 1997). Still, a set of baseline data must first be established in order to have a comparison to base future studies on. ...
... these model organisms, we can make inferences about the entire ecosystem without needing to study every component individually (Danks 1992, 1997). Still, a set of baseline data must first be established in order to have a comparison to base future studies on. ...
Species Accounts - Contra Costa County
... relatively cold (but above freezing) temperatures in quiet, undisturbed places. These areas are often in the more interior, thermally stable portions of caves and mines (Barbour and Davis 1969, Dalquest 1947, Humphrey and Kunz 1976, Pearson et al. 1952, Zeiner et al. 1990). Hibernating bats are ofte ...
... relatively cold (but above freezing) temperatures in quiet, undisturbed places. These areas are often in the more interior, thermally stable portions of caves and mines (Barbour and Davis 1969, Dalquest 1947, Humphrey and Kunz 1976, Pearson et al. 1952, Zeiner et al. 1990). Hibernating bats are ofte ...
early primary succession on mount st. helens: impact of insect
... Live lupines competitively suppress other ruderal species, whereas dead lupines facilitate these same species (Morris and Wood 1989, del Moral and Bliss 1993, Titus and del Moral 1998a). However, L. lepidus’s potential impact on community development has been tempered by its surprisingly slow rate o ...
... Live lupines competitively suppress other ruderal species, whereas dead lupines facilitate these same species (Morris and Wood 1989, del Moral and Bliss 1993, Titus and del Moral 1998a). However, L. lepidus’s potential impact on community development has been tempered by its surprisingly slow rate o ...
indirect facilitation: evidence and predictions from a riparian
... effect. Although theory predicts that these interactions may be common in assemblages of three or more competitors, experimental studies of this process are rare. Here, I report a study of a northern California riparian community, where I tested the hypothesis that the sedge Carex nudata had direct ...
... effect. Although theory predicts that these interactions may be common in assemblages of three or more competitors, experimental studies of this process are rare. Here, I report a study of a northern California riparian community, where I tested the hypothesis that the sedge Carex nudata had direct ...
environmental filtering of enzymatic activities
... Symbiotic structure linking soil filamentous fungi to short roots of most trees, including oaks, and involving diverse Basidiomycota and Ascomycota (Courty et al. 2010; van der Heijden et al. 2015). Their morpho-anatomy is variable, especially in the extension of the hyphal network surrounding root t ...
... Symbiotic structure linking soil filamentous fungi to short roots of most trees, including oaks, and involving diverse Basidiomycota and Ascomycota (Courty et al. 2010; van der Heijden et al. 2015). Their morpho-anatomy is variable, especially in the extension of the hyphal network surrounding root t ...
Linking modern coexistence theory and contemporary niche theory
... and αij represents the impact of species j on the per capita growth rate of species i. Thus αii and αij represent the absolute intra-and inter-specific competition coefficients, respectively. Two species can coexist when α11 > α21 and α22 > α12. This pair of inequalities, sometimes referred to as ...
... and αij represents the impact of species j on the per capita growth rate of species i. Thus αii and αij represent the absolute intra-and inter-specific competition coefficients, respectively. Two species can coexist when α11 > α21 and α22 > α12. This pair of inequalities, sometimes referred to as ...
SOUTHERN BROWN BANDICOOT – ISOODON OBESULUS
... low vegetation is often associated with low lying areas, but a water supply is not a pre requisite for bandicoot populations. Bracken, piles of logs and fallen timber, rocks and rabbit burrows also provides good cover for bandicoots. In areas with high bandicoot populations, sightings of bandicoots ...
... low vegetation is often associated with low lying areas, but a water supply is not a pre requisite for bandicoot populations. Bracken, piles of logs and fallen timber, rocks and rabbit burrows also provides good cover for bandicoots. In areas with high bandicoot populations, sightings of bandicoots ...
Biology of Mayflies - Ephemeroptera Galactica
... exact numberof instars has only been determined in a few species (24, 44, 57). Manyworkers have therefore distinguished developmental stages on the basis of morphological characters (77). Although these mayencompass several instars, they have proved useful in analyzing complex life cycle patterns (1 ...
... exact numberof instars has only been determined in a few species (24, 44, 57). Manyworkers have therefore distinguished developmental stages on the basis of morphological characters (77). Although these mayencompass several instars, they have proved useful in analyzing complex life cycle patterns (1 ...
Appendix C, Part 1
... As most shorebirds are restricted to fairly typical habitats at most times of the year, it was relatively easy to identify the types of habitats used by each species when present in BCR-14, using the standard list provided at the workshop. These habitat types are listed in approximate decreasing ord ...
... As most shorebirds are restricted to fairly typical habitats at most times of the year, it was relatively easy to identify the types of habitats used by each species when present in BCR-14, using the standard list provided at the workshop. These habitat types are listed in approximate decreasing ord ...