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1

Short-term changes in pelagic biocenosis in the near-surface layer at station G-2 (Gdansk Deep, Southern Baltic) during the spring bloom

100%
Witek Z., Allikas E.
Oceanologia
|
1990
|
tom 28
2

Restoration of subalpine species-rich grasslands: short-term vs long-term changes in the density and diversity of above-ground insects

84%
Karg J., Kujawa K., Manhart C., Marschalek H., Neugebauer K. R., Sachteleben J.
Polish Journal of Ecology
|
2015
|
tom 63
|
nr 1
Due to decrease in the area of extensively managed, semi-natural grasslands, that contribute to high biodiversity level preservation, the conversion of highly productive meadows to extensively managed, species-rich grasslands is now regarded as an important task for nature conservation. The aim of this long-term study was to assess the significance of restoration measures for diversity and trophic structure of above-ground insect community. That study challenges some weaknesses of previous studies as it was conducted with the use of suction trap enabling quantitative analyses of the changes in most insect taxa, and in a long time-span (1992–2005) in a set of permanent plots. The study area was located in a subalpine zone in Bavaria, near Laufen (Germany). The restoration process was initiated in 1996 by a cessation of fertilization and reduction of number of mowing to 1–2 per year. The changes in insect density and diversity (number of families) were monitored in ten restored and two reference plots with the aid of a suction trap. The changes in the insect community recorded during 14 years support findings from other studies that response of insect community to restoration process is usually slow on average. The short-term comparison in 2004–2005 between the restored and reference plots show that the first ones were characterized by more diverse (in term of family number) insect communities (as a whole as well as in guilds of predatory and parasitic species). From the other side, the long-term trend analysis shows that since 1998–2000 insect diversity and abundance was declining. Also trophic structure is fluctuating without clearly defined trend. These findings are in line with the results of the analyses of taxonomic composition similarity. They did not support the expectations neither that difference between initial and current taxonomical composition in a restored plot increases in time (mainly because of incoming new species), nor that spatial heterogeneity of insect assemblages should increase. However, spatio-temporal insect interactions between sample plots (located close to each other), linked to high movement ability of many insect taxa, could mask the changes in insect community caused by restoration.
3

Short-term beach transformation on a non-tidal sea coast

84%
Wodzinowski T.
Oceanological and Hydrobiological Studies
|
2009
|
tom 38
|
nr Suppl.1
121-134
4

Spermatozoan numbers and characteristics of associated organs in male white-tailed deer during the breeding season

84%
Peles J. D., Rhodes O. E., Smith M. H.
Acta Theriologica
|
2003
|
tom 48
|
nr 1
Short-term changes in testicular spermatozoa, testes weight, testes length, epididymes weight, epididymal spermatozoa, and body weight of adult and yearling male white-tailed deerOdocoileus virginianus (Zimmermann, 1780) were examined over a 9-week period that included the peak of the breeding season in South Carolina. Mean values for all characteristics were significantly greater in adults compared to yearlings. Values for reproductive characteristics tended to be highest during the last week in October or the first week in November and decreased over the course of the investigation. Body weight of adults decreased from late October through early December, whereas body weight of yearlings fluctuated only slightly throughout the 9-week period. Significant correlations were observed among all reproductive characteristics and body weight was highly correlated with all characteristics except testicular spermatozoa. Values for reproductive characteristics differed significantly between the right and left sides of the reproductive tracts. Results demonstrate the occurrence of short-term changes in reproductive capabilities of white-tailed deer that are relevant for the development of management strategies for this species
5

Short- and long-term changes in phytoperiphyton structure and production in small streams of Eastern Fennoscandia

84%
Komulaynen S.
Oceanological and Hydrobiological Studies
|
2007
|
tom 36
|
nr Suppl.1
6
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Short-term changes in specific conductivity in Polish coastal lakes (Baltic Sea basin)

67%
Cieslinski R.
Oceanologia
|
2013
|
tom 55
|
nr 3
7

Krótkoterminowe zmiany maksymalnej temperatury powietrza w półroczu chłodnym w Polsce

67%
Ciaranek D.
Acta Scientiarum Polonorum. Formatio Circumiectus
|
2016
|
tom 15
|
nr 1
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