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Impact of Taxonomic Resolution on the Indicatory Information : Studies on Carabid Beetles in Poland

Schwerk A., Dymitryszyn I.

Polish Journal of Ecology

2016

Vol. 64, nr 2

255--267

The informative power of species surrogacy with respect to ecological processes and anthropogenic influences has been rarely studied. Thus, five datasets on carabid beetles collected using pitfall traps were analysed in order to study the impact of changing the taxonomic resolution from species to genus level on their indicatory information: a dataset of eight study sites in differently managed habitats sampled in 2013, a dataset tracing successional changes from 2004 to 2013 in a naturally regenerated pine forest, a dataset of three sites on a heap of power plant ashes and a dataset of four sites on a colliery spoil heap, both sampled from 2004 to 2011, and a dataset of six sites along the roadside of a highway being renovated in 2009, sampled in 2008 and from 2010 to 2012. The datasets were analysed by studying correlations of species numbers with genus numbers and species based Shannon diversity with genus based Shannon diversity, testing compliance between species based and genera based similarity matrices, and comparing the information provided by ordination diagrams based on species information or genus information respectively. The results indicate that at least in our study a substantial amount of information provided by species data is still contained in the genus data, but information about fine graded differences between study sites gets lost. We conclude that, even if carabid genus information might be useful in some cases (e.g. preliminary biodiversity assessment), the limitation to higher taxonomic levels like the genus level has to be done with caution.

Budowa autostrady A-2 - szansą na wzbogacenie walorów i zasobów w przekształconym krajobrazie rolniczym Wielkopolski

Dymitryszyn I.

Architektura Krajobrazu

2003

nr 1-2

40-44

The section of the newly designed A-2 highway between Poznań and Września takes a new route through agriculturally used land. Most frequently, land designated for highway corridors is covered with huge single-crop corn and wheat acreage. The primeval Wielkopolska landscape in this region was characterised by high proportion of wooded areas and large areas of bogs. Over time, starting in the XIV century, deforestation and drainage of the area started, gradually transforming the species rich forest and hydrogenic habitat (Hładynowicz H. J. 1932). The physiognomy of Wielkopolska underwent transformation particularly in the XX century, a visible indication of which was the disappearance of characteristic small ponds. Fragmented agricultural landscape has undergone a strong degradation. Most of the natural recourses disappeared (lot of animal and plant species). Indigenous species survive only inside, not numerous and isolated, habitat remnants. Is there a chance, that construction of the A-2 highway would able to change degraded stage of Wielkopolska landscape? Green belts and right-of-way with rich structure of designed vegetation, parallel to carriageways, can functioning as a corridor. Green corridors near existing motorways in Holland, USA function as a corridors, which connecting isolated patches as: tree plantings, cave-in lakes surrounded by crop fields (habitat remnants of numerous species). Forest birds, small mammals, arthropods are used to migrate along Corynephore-tum associations, groups of native shrubs and trees species shaped on a highway ROW (Viles R.L., Rosier D. 2001; Bolger D., Scott A. at al. 2001; Bergin T, Best L. at al. 2000; Brotons L, Herrando S., 2001 Vermeulen H., 2000). The key plans of Polish motorway network should consider management by rules of the landscape ecology. That means not only a creation of management projects in the limits of highway's separating lines (borders of land repurchase) but a creation integrated plans of ecological management of agricultural landscape adjacent to a road corridor, too. Ecological rules of a roadside landscape designing take a chance to recreate some natural recourses in degraded agricultural landscape of Wielkopolska.