Wyniki wyszukiwania

1

Long-term changes of the fish community in a small hypertrophic lake

100%

Rechulicz J.

Polish Journal of Environmental Studies

|

2014

|

tom 23

|

nr 3

A study of fish fauna in a small hypertrophic lake was conducted in the spring, summer, and autumn of 2006-10. In total 11 fish species representing 4 families were found. The species richness was low, depending on the season, and ranged from 2 to 7 species. A variation of species dominance, depending on the year and season, was found. Total fish abundance and biomass were varied according to the season, but differences depending on the year had been noted only in fish biomass. The fish fauna was characterized by low values in indices of diversity and the estimated turnover rate of the fauna ranged from 0.09 to 0.56, and the regression analysis showed a significant growth in its upward trend.

2

Competition hierarchies in ant communities (Hymenoptera, Formicidae)

100%

Pisarski B., Vepsalainen K.

Annales Zoologici

|

1988-1989

|

tom 42

|

nr 13-17

A concept of competition hierarchy among ant species is presented. The hierarchy consists of three main levels, and the species are arranged in the hierarchy on the basis of social organization (mainly forager densities and recruitment efficiencies) of colonies. The concept allows testable predictions on probable and improbable species pairs in local ant species assemblages. Structure of competition hierarchy and positions of a number of North European species in it is reviewed. A schematisized map on minimal distances among nests of species belonging to various levels of the hierarchy is presented. A case study on relations among highest-level, territorial species, is described.

3

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Long-term changes in snail communities of selected anthropogenic water bodies of the Silesian Upland. I. Subsidence reservoirs

100%

Spyra A., Strzelec M., Cieplok A.

Folia Malacologica

|

2016

|

tom 24

|

nr 1

4

ECOBASE-soil, a programme for data management and biodiversity analysis of soil animal communities

100%

Deharveng L., Bedos A.

Polskie Pismo Entomologiczne

|

1995

|

tom 64

|

nr 1-4

5

The influence of agricultural landscape structure on the flora and communities of parasitoids in statistical terms

84%

Piekarska-Boniecka H., Siatkowski I., Ratynska H.

Polish Journal of Entomology

|

2010

|

tom 79

|

nr 4

The agricultural landscape structure in relations between spatial units (forest edge, shrubberies, field borders and roadsides), its green cover and animal communities is studied. The share of parasitoid Hymenoptera of the Pimplinae subfamily in structural elements of agricultural landscape is presented. The relationships between species diversity and the abundance of Pimplinae communities and the complexity level of agricultural landscape are considered. For examining these dependences, multivariate statistical analysis, eg. principal component analysis is used.

6

Species diversity and biomass of communities of moss mites (Oribatida, Acarida) of the three different biotopes in the Upper Silesian Region

84%

Zbikowska-Zdun K.

Acta Biologica Silesiana

|

1988

|

tom 10

7

Analysis of spatial point pattern shows no desertion of breeding Mute Swan areas by the other waterbirds within fishpond

84%

Gayet G., Calenge C., Broyer J., Mesleard F., Vaux V., Fritz H., Guillemain M.

Acta Ornithologica

|

2016

|

tom 51

|

nr 2

Mute Swan Cygnus olor numbers have recently increased in a dramatic fashion in Western Europe and in North America, suggesting there could be potential consequences for the rest of the waterbird community. Breeding Mute Swan pairs may behave territorially towards other waterbirds, taking advantage of their larger size, and hence cause concern regarding their potential effects on waterbird communities. We studied how the within-site distributions of breeding Mute Swans and other waterbirds were related to each other, in order to assess if there is support to the assertion that breeding Mute Swans may affect the distribution of the other waterfowl within waterbodies. We mapped waterbird and swan distribution within fishponds during the Mute Swan breeding period. Relying on spatial point pattern analysis, our first finding is that breeding Mute Swans were located in the vicinity of the other waterbirds, using the same area within fishpond. Waterbirds do not completely desert the area used by breeding swan pairs within a waterbody, hence not supporting the claim that Mute Swans dislodge the other species. If an exclusion process by Mute Swan breeding pairs towards waterbirds exists, it is not strong enough to generate deserted areas by waterbirds around breeding Mute Swans. Our second finding is that breeding Mute Swans were not located where the density probability function for waterbird presence was the greatest within a fishpond, i.e. breeding Mute Swans were not located in the centre of groups formed by other waterbirds within each fishponds. This may indicate slightly different micro-habitat preferences or use within fishponds, or could indicate the potential occurrence of interactions. In conclusion, these results question whether the increasing Mute Swan populations actually directly threaten the other waterbird communities in such habitats, and require population control as is often claimed.

8

Accuracy of the mapping technique for a dense breeding population of the Hawfinch Coccothraustes coccothraustes in a deciduous forest

84%

Tomialojc L.

Acta Ornithologica

|

2004

|

tom 39

|

nr 1

The accuracy of the territory-mapping technique for estimating the abundance of densely breeding Hawfinches was tested in an old and unfragmented lime-oak-hombeam forest in the Białowieża National Park, E Poland. Hawfinch numbers estimated from counts of the whole bird community carried out with the application of the standards of the improved mapping technique were compared with seven-year data on the bird's true numbers, which are known from parallel intensive nest searches and persistent tracking of the movements of pairs. In a forest with a dense population of Hawfinches the mapping technique underestimated their numbers by 20% in years of moderate density and by 35% during high-density years. Even though the underestimation was negatively correlated with the true density of Hawfinches, the figures obtained by both methods reflected year-to-year changes in a similar way. An improvement in mapping data is achievable either by closer attention being paid to the species during standard visits (the best ones for surveying it), or post factum by the introduction of a correction factor into the mapping-technique figures.

9

Long-term changes in malacocoenoses of oak-hornbeam forest (Querco-Carpinetum medioeuropaeum): an attempt to apply the carousel model

84%

Jankowiak A., Bloszyk J., Wachnicka E., Szybiak K., Goldyn B., Rybska E., Napierala A.

Badania Fizjograficzne. Seria C - Zoologia

|

2010

|

tom 01(C51)

10

Impact of natural chanelization of a small lowland river on biodiversity of fish communities

84%

Rechulicz J., Gorzel M., Kornijow R.

Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego

|

2004

|

tom 01

11

Birds inhabiting organic and conventional farms in Central Poland

84%

Wolnicki K., Lesinski G., Rembialkowska E.

Acta Zoologica Cracoviensia. Ser.A Vertebrata

|

2009

|

tom 52A

|

nr 1-2

12

Coprophilous histerid beetle community (Coleoptera: Histeridae) of western Poland

84%

Bajerlein D.

Polish Journal of Entomology

|

2009

|

tom 78

|

nr 3

Results of the first study on species composition, abundance and seasonal dynamics of histerid beetles inhabiting dung in western Poland are presented. Beetles were sampled over two years by using pitfall traps. The 14 species collected were dominated by Margarinotus carbonarius which made up almost 60% of all recorded specimens. Less numerous was Saprinus aeneus (30%). Histerid beetles were observed since April till October. Most recorded specimens were observed during spring.

13

Remarks on the zooplankton in the water bodies of Upper Zawoja and its vicinity

84%

Komala Z.

Folia Biologica

|

1996

|

tom 44

|

nr 1-2

14

Breeding bird dynamics in a primeval temperate forest over thirty-five years: variation and stability in the changing world

67%

Wesolowski T., Mitrus C., Czeszczewik D., Rowinski P.

Acta Ornithologica

|

2010

|

tom 45

|

nr 2

15

Above-ground insect communities in the forest-steppe zone of northern Mongolia

67%

Karg J., Slowik J., Dulamsuren C., Muhlenberg M.

Ecological Questions

|

2008

|

tom 09

16

Use of oligochaete communities for assessing the quality of sediments in watercourses of the Geneva area (Switzerland) and Artois-Picardie basin (France): proposition of heavy metal toxicity thresholds

67%

Vivien R., Tixier G., Lafont M.

International Journal of Ecohydrology and Hydrobiology

|

2014

|

tom 14

|

nr 2

17

Echolocation calls of the bats of Trinidad, West Indies: is guild membership reflected in echolocation signal design?

67%

Pio D. V., Clarke F. M., Mackie I., Racey P. A.

Acta Chiropterologica

|

2010

|

tom 12

|

nr 1

Time-expanded echolocation calls were recorded from 29 species of Neotropical bats in lowland moist tropical forest in Trinidad, West Indies with three aims: (1) to describe the echolocation calls of the members of a diverse Neotropical bat community, especially members of the family Phyllostomidae, whose calls are not well documented (2) to investigate whether multivariate analysis of calls allows species and foraging guilds to be identified and (3) to evaluate the use of bat detectors in surveying the phyllostomids of Neotropical forests. The calls of 12 species of the family Phyllostomidae are described here for the first time and a total of 29 species, belonging to five families (Emballonuridae, Mormoopidae, Phyllostomidae, Molossidae and Vespertilionidae) were recorded. Quadratic discriminant function analysis (DFA) was used to obtain classification rates for each one of 11 individual species and for six guilds (based on diet, foraging mode and habitat) comprising 26 species. Overall classification rates were low compared to similar studies conducted in the Palaeotropics. We suggest that this may be due to a combination of ecological plasticity for certain species and a loose relationship between echolocation call shape, fine-grained resource partitioning and resource acquisition in phyllostomids.

18

The influence of a local temperature inversion on the foraging behaviour of big brown bats, Eptesicus fuscus

67%

Arbuthnott D., Brigham R. M.

Acta Chiropterologica

|

2007

|

tom 09

|

nr 1

To maximise foraging efficiency, it is reasonable to expect animals to forage in the highest quality patches. Insectivorous bats should therefore travel to and forage at sites with the highest insect abundance. Since insects are ectothermic, their levels of activity should be higher in warmer areas, making these high quality patches for bats. A nightly temperature inversion occurring in the Cypress Hills (Saskatchewan, Canada) presented an opportunity to test our hypothesis that big brown bats (Eptesicus fuscus) select foraging sites based on temperature as a proxy for insect abundance. If temperature is an important determinant of the foraging behaviour of E. fuscus, we expect bats to forage in the warmest site closest to local night roosts. We tracked 18 bats for a total of 111 nights over two years and found that individuals often spent at least some of each foraging bout in an area where the temperature inversion was small or non-existent. Bats sometimes travelled up to 11 km to reach this site. Foraging in areas where the temperature inversion was small provides indirect evidence that local temperature fluctuations are not a major influence on the selection of foraging area by E. fuscus. Also, since there was little difference in the temperature between the nearby predicted foraging sites and actual foraging sites, we argue that the effect of temperature on insect activity cannot be used to predict foraging habitat selection by these bats. We found that the insect community of the foraging area was different than that of the roosting area, and that beetles were more abundant in the foraging site. Our data suggests that insect community composition is potentially a stronger direct influence on bat foraging behaviour than is temperature.

19

Prevalence of eugregarines (Apicomplexa: Eugregarinida) parasitizing in ground beetles (Coleoptera, Carabidae) in various habitats

67%

Sienkiewicz P., Lipa J. J.

Polish Journal of Entomology

|

2009

|

tom 78

|

nr 4

Differences in the prevalence of eugregarines parasitisation in epigeic communities of the Carabidae beetles family were studied. Host insects were collected from six sites differing in the level of plant cover and humidity. It was proved that the level to which Carabidae were parasitized by eugregarines was significantly influenced by the plant cover of the land. The Carabidae way of feeding was a less important factor influencing the prevalence. Large size zoophages and hemizoophages were parasitized at higher level than small zoophages.

20

Invertebrate communities of high mountain lakes (Polish Tatra Mts.)

67%

Galas J.

Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego

|

2004

|

tom 01

Ograniczanie wyników

Long-term changes of the fish community in a small hypertrophic lake

Competition hierarchies in ant communities (Hymenoptera, Formicidae)

Long-term changes in snail communities of selected anthropogenic water bodies of the Silesian Upland. I. Subsidence reservoirs

ECOBASE-soil, a programme for data management and biodiversity analysis of soil animal communities

The influence of agricultural landscape structure on the flora and communities of parasitoids in statistical terms

Species diversity and biomass of communities of moss mites (Oribatida, Acarida) of the three different biotopes in the Upper Silesian Region

Analysis of spatial point pattern shows no desertion of breeding Mute Swan areas by the other waterbirds within fishpond

Accuracy of the mapping technique for a dense breeding population of the Hawfinch Coccothraustes coccothraustes in a deciduous forest

Long-term changes in malacocoenoses of oak-hornbeam forest (Querco-Carpinetum medioeuropaeum): an attempt to apply the carousel model

Impact of natural chanelization of a small lowland river on biodiversity of fish communities

Birds inhabiting organic and conventional farms in Central Poland

Coprophilous histerid beetle community (Coleoptera: Histeridae) of western Poland

Remarks on the zooplankton in the water bodies of Upper Zawoja and its vicinity

Breeding bird dynamics in a primeval temperate forest over thirty-five years: variation and stability in the changing world