Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 3

Liczba wyników na stronie
first rewind previous Strona / 1 next fast forward last
Wyniki wyszukiwania
Wyszukiwano:
w słowach kluczowych:  Diplopoda
help Sortuj według:

help Ogranicz wyniki do:
first rewind previous Strona / 1 next fast forward last
EN
Currently, the alternative forms of management are increasingly applied in agriculture. Although their less negative impact on environment is generally supposed, there is still a lack of a reliable data about their real favourability for the abundance and diversity of soil invertebrates, including millipedes. Therefore, the aim of our study was to find out, whether the form of agricultural management affects the structure of millipede communities and hence, the performance of their functions in soil ecosystems. The research was carried out using pitfall trapping through growing seasons 2005 to 2007 on the model territory of Agricultural Cooperative (AC) Očová (Central Slovakia). Millipedes were captured at four pairs of sites (8 sites in total). The same cultivated crop (wheat, barley, alfalfa or permanent law) with application of two different forms of agricultural management (conventional form and sustainable form with basic sustainable agro-environmental scheme) was characteristic of each pair of sites. The research results disclosed that the management form plays a significant role, especially in such agrocoenoses, in which the same crop is cultivated for several years (e.g. sites with alfalfa or permanent lawn), i.e., on the sites without ploughing or other similar agrotechnical measures. In these cases, the sites with the sustainable agro-environmental scheme had higher species richness (8 and 9 species) and higher total abundance of millipede communities (2.2 and 5.7 ind. collected per one day and one trap) than the sites with the conventional form of agrotechnical management (5 and 5 species, 0.09 and 0.3 ind. collected per one day and one trap). In order to obtain a more detailed knowledge about the impact of agricultural management forms on millipede communities, this kind of research should be carried out in different conditions (other crops, soil conditions, climate zones, etc.) as well.
EN
The influence of the site factors related to soil, forest stand and litter as well as to altitude, exposure and slope - on the composition/abundance structure of millipede communities (Diplopoda) was estimated. The research was carried out in 1999 to 2002 in 13 mixed oakhornbeam forest stands in Male Karpaty Mts. (South-Western Slovakia) ranged from 132 to 768 m a.s.l. In each locality, millipedes were collected by sieving of the litter taken at monthly intervals from 16 quadrates (25 x 25 cm) in each site. The redundancy analysis was applied. The most apparent influence on the community structure was ascertained for pH-value of litter and age of forest stand. Nitrogen content in litter was the most important factor, influencing the species richness of the millipede assemblages in studied sites.
EN
Research was conducted to determine the effect of various oil derivatives on selected groups of invertebrates - atmobionts, representatives of Diplopoda, Chilopoda, Gastropoda and Isopoda. Possibility was also assessed of using them as potential bioindicators of soil contamination with petroleum derivatives. Fauna was trapped on: soil contaminated with petrol, diesel oil, used engine oil and on unpolluted soil (Control). The pollutant substances were used in the amount of 2 dm'/m2. One Barber's trap was placed in the centre of each microplot. The traps were emptied once a week from May until October 2003 and from May to September 2004. Soil contamination with the analyzed oil derivatives does not negatively influence the occurrence of Diplopoda, Chilopoda and Isopoda representatives. The soil pollution with oil derivatives limit the numbers of atmobionts. The length of this negative effect for petrol and used engine oil is about 3 weeks, whereas for diesel oil it may last longer and become apparent only after 4 months since the moment of soil pollution. The negative effect of oil derivatives on Gastropoda representatives may become evident only after several months since the moment of contamination. Petrol had the least negative effect upon this group. From among the analyzed invertebrate groups, the atmobionts and Gastropoda could be potential bioindicators of pollution. However, more detailed research in this area is necessary.
PL
Celem podjętych badań było określenie oddziaływania różnych substancji ropopochodnych w stosunku do wybranych grup bezkręgowców - atmobiontów, przedstawicieli Diplopoda, Chilopoda, Gastropoda, Isopoda Ocenie poddano także możliwość wykorzystania ich jako potencjalnych bioindykatorów skażenia gleby pochodnymi ropy naftowej. Odłowy fauny prowadzono na: glebie zanieczyszczonej benzyną, olejem napędowym, przepracowanym olejem silnikowym oraz glebie nieskażonej (kontrola). Substancje zanieczyszczające zastosowano w ilości 2 dm3/m2. W centralnej części każdego mikropoletka umieszczano po jednej pułapce Barbera. Pułapki opróżniano raz w tygodniu od maja do października 2003 r. oraz od maja do września 2004 r. Skażenie gleby badanymi substancjami ropopochodnymi nie wpływa ujemnie na występowanie przedstawicieli rzędów Diplopoda, Chilopoda ilsopoda. Zanieczyszczenie gleby ropopochodnymi ogranicza liczebność atmobiontów. Długość tego negatywnego wpływu w przypadku benzyny i przepracowanego oleju silnikowego wynosi około 3 tygodni, natomiast w przypadku oleju napędowego może trwać dłużej i ujawniać się nawet po upływie 4 miesięcy od momentu zanieczyszczenia gleby. Negatywne oddziaływanie ropopochodnych na przedstawicieli Gastropoda może ujawniać się dopiero po upływie kilku miesięcy od momentu skażenia. Najmniej ujemnie na tę grupę bezkręgowców oddziałuje benzyna. Spośród badanych grup bezkręgowców potencjalnymi bioindykatorami zanieczyszczenia gleby substancjami ropopochodnymi mogłyby być atmobionty i Gastropoda. Jednak konieczne jest przeprowadzenie bardziej szczegółowych badań w tym zakresie.
first rewind previous Strona / 1 next fast forward last
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.