The independent effects of host age and size on parasite abundance are examined in yellow perch from Garner Lake in east-central Alberta. Older, larger perch tend to have more species of parasites combined with larger parasite infrapopulations. Sexual size dimorphism in perch generates 2 different ...

... the abundance, size, growth, and age of advance regeneration Douglas-fir, beneath an eighty year-old overstory ... ...

... range. The first 3 size classes represented the smallest animals, which were considered to be relatively young (2 ... variance of flea abundance to its mean in smallest and largest size classes ... was c...

are characterized by abun- dant Dictyococcites antarcticus, Reticulofenestra pseudoumbilica/gelida, medium-sized probably represent an altered tephra. Age The biostratigraphy of Site 1120 is largely based on the onboard Relative abundance of diatoms tephra Pleistocene Miocene middle early late Age F7. Relative ...

We investigated the effects of clear-cut size on species richness, reproductive effort, and relative abundance of scrub-scrub birds at the Savannah River Site. Stands varied in size from 2 to 57 ha that were 2 to 6 years old. Species richness was not explained by stand size or stand age. In ...

... flavirostris, Fle Fulica leucoptera, Asi Anas sibilatrix, Oja Oxyura jamaicensis, Vch Vanellus chilensis, Age Anas georgica, Apl Anas ... flavirostris, Fle Fulica leucoptera, Asi Anas sibilatrix, Oja Oxyu...

... and reproductive impairment. Ottawa, ON: Canadian Wildlife Service Technical Report number 362. Environment Canada. Hammer, �., Harper, D.A.T., Ryan, P.D., 2001. Past: Paleontological Statistics Software P...

Natural stable isotope abundances measured in tissues of Alaska North Slope coregonine fishes were shown to reflect differences in feeding habitat relative to size and age. Stable isotope methodology may be used as a tool for proxy analysis of fish behavi...

island in parentheses. Species Population Size Plant Age Amelanchier alnifolia 8.5 � 1.3 (i = 48) 24 common enough to analyze statistically: Amelanchier alnifolia (Rosaceae), Lonicera involucrata has documented the habitat affinities of all five study species. Amelanchier and Ribes were

nets, and seines for sampling occurrence, abundance, and size of age-0 yellow perch Perca flavescens with that of other sampling gears targeting age-0 yellow perch Perca flavescens. The first objective of our studyQueen. 1988. Ontogenic changes in the distribution of larval and juvenile yellow perch (Perca ...

Analysis of catches in pound nets provided indices of population size (ages 2-6) and of recruitment (ages 4-6) for alewives (Alosa pseudoharengus) spawning in South Bay (1954-82). Four hypotheses concerning the effects of stock size and water temperature on growth and recruitment were tested statistically. The ...

Investigations of the Lower Miocene of the Transylvanian Basin reveal particularly high abundances (> 90 % of total foraminifera) of small sized biserial foraminifera (Bolivina/Streptochilus). This biotic event has not been noticed in the Transylvanian Basin so far probably owing to the facies misinterpretation and the small size of ...

The cyanobacteria and plankton were enumerated and sized using color image analyzed fluorescence ... abundance of synechococcus-type cyanobacteria ...

In 2000, summer flounder stocks were determined to be overfished. Management of the species entered a ten year rebuilding period in order to increase abundance to sufficient levels. Recent stock assessments indicate that, although fishing mortality has decreased substantially and biomass is at the highest level ever recorded, the stock is still only about 50 % of the target ...

Reproductive success was relatively consistent, and adequate to maintain species abundance at a nearly constant level, during 1963-69. Both abundance and growth in length increased from the lower to the upper portion of the reservoir. In most characteristics -- growth in length, length-weight relation, age at maturity, and food -- ...

Lutze, Gerhard F (1980): Relative abundance of live (Rose Bengal stained) benthic foraminifera in the small size ... ...

Lutze, Gerhard F (1980): Relative abundance of live (Rose Bengal stained) benthic foraminifera in the large size ... ...

... 115 Mosquito Abundance is Correlated with Cliff Swallow (Petrochelidon pyrrhonota) Colony SizeCharles R. Browna and Rajni A. Set...

... determine the patterns of succession which follow such local disturbances: the size of the clearing, the local abundances of adult plants whose spores can disperse ... ...

We observed flower and fruit production for nine understory shrub species in western Washington and Oregon and examined the relationships between shrub reproductive output and plant size, plant age, site factors, and overstory density to determine the factors that control flowering or fruiting in understory shrubs. In Washington, 50 or more shrubs or ...

We observed flower and fruit production for nine understory shrub species in western Washington and Oregon and examined the relationships between shrub reproductive output and plant size, plant age, site factors, and overstory density to determine the factors that control flowering or fruiting in understory shrubs. In Washington, 50 or more shrubs or ...

Fish populations in Lakes Red Rock and Rathbun were studied after impoundment by monitoring relative abundance, species composition, size distribution, age structure, reproductive success, growth, and stocking success. In addition, reservoir operations we...

menhaden (Brevoor tia tyrannus) collected weekly during their estuarine recruitment seasons in 1989 to this New Jersey estuary. Thus, this study provides evi dence that some B. tyrannus spawned south of Cape:609�623 (2002). Recruitment of larval Atlantic menhaden (Brevoortia tyrannus) to North Carolina and New

Fish may significantly affect habitat use by birds, either as their prey or as competitors. Fish communities are often distinctly size-structured, but the consequences for waterbird assemblages remain poorly understood. We examined the effects of size structure of common carp (Cyprinus carpio) cohorts together with other biotic and abiotic pond ...

Fish may significantly affect habitat use by birds, either as their prey or as competitors. Fish communities are often distinctly size-structured, but the consequences for waterbird assemblages remain poorly understood. We examined the effects of size structure of common carp ( Cyprinus carpio) cohorts together with other biotic and abiotic pond ...

Improvement of methods for evidential facial comparison for the Courts relies on the collection of large databases of facial images that permit the analysis of face shape variation and the development of statistical tools. In this paper, we present a short description and key findings of an anthropometric study of face shape variation in three-dimensions. We used Statistical Shape Analysis to ...

We examine environmental constraints on life history characters among three elevationally distinct populations of the desert lizard Sceloporus merriami in west Texas. We show how environmental gradients in temperature and food abundance interact to constrain body temperatures, daily activity times, growth rates, and age-specific body ...

Report on progress on evaluation of the Columbia River Northern Squawfish Management Program in 1995. The objectives in 1995 were to (1) evaluate exploitation rate and size composition of northern squawfish captured in various fisheries, and estimate reductions in predation on juvenile salmonids since implementation of the Northern Squawfish Management Program; and (2) ...

Report on the progress on evaluation of the Northern Squawfish Management Program in 1994. The objectives in 1994 were to (1) evaluate exploitation rate, size composition, and incidental catch of northern squawfish (Ptychocheilus oregonensis) captured in the various fisheries and estimate reductions in predation on juvenile salmonids since implementation of the management ...

Page 1. Monotone Approximation for a Nonlinear Size and Class Age Structured Epidemic Model ... 2 Size and Class Age Structured Epidemic Model ...

Very few marine fisheries assessments use oceanic environmental information when estimating stocks for management purposes, exceptions being assessments of California sardines and northern Australian prawns, which use sea surface temperature. Instead, assessments are based on trends and indices of abundance, biomass, age composition, ...

Long terminal repeat (LTR) retrotransposons are major components of plant genomes influencing genome size and evolution. Using two separate approaches, we identified the Ty1-copia retrotransposon families Cotzilla and SALIRE in the Beta vulgaris (sugar beet) genome. While SALIRE elements are similar to typical Ty1-copia retrotransposons, Cotzilla elements belong to a lineage ...