Blood biochemistry reflects seasonal nutritional and reproductive constraints in the Eurasian Badger (Meles meles).

Domigo-Roura X, Newman C, Calafell F, Macdonald DW (2001) Blood biochemistry reflects seasonal nutritional and reproductive constraints in the Eurasian Badger (Meles meles). Physiological and Biochemical Zoology 74:450-460.

Land-use and socio-economic correlates of plant invasions in European and North African countries.

Vilà M, Pujadas J (2001) Land-use and socio-economic correlates of plant invasions in European and North African countries. Biological Conservation 100:397-401.

Population density of primates in a large fragment of the Brazilian Atlantic rainforest.

González-Solís J, Guix JC, Mateos E, Llorens L (2001) Population density of primates in a large fragment of the Brazilian Atlantic rainforest. Biodiversity and Conservation 10:1267-1282.

Spatial patterns of forest fires in Catalonia (NE of Spain) along the period 1975-1995. Analysis of vegetation recovery after fire.

Díaz-Delgado R, Pons X (2001) Spatial patterns of forest fires in Catalonia (NE of Spain) along the period 1975-1995. Analysis of vegetation recovery after fire. Forest Ecology and Management 147:67-74.

When do herbivores affect plant invasion? evidence for the natural enemies and biotic resitance hypotheses.

Maron JL, Vilà M (2001) When do herbivores affect plant invasion? evidence for the natural enemies and biotic resitance hypotheses. Oikos 95:361-373.

Influence of sampling size in the estimation of mean throughfall in two Mediterranean holm oak forests.

Rodrigo A, Avila A (2001) Influence of sampling size in the estimation of mean throughfall in two Mediterranean holm oak forests. Journal of Hydrology 243:216-227.

Sewage sludge application on soil: Effects on two earthworm species

Barrera I., Andrés P., Alcañiz J.M. (2001) Sewage sludge application on soil: Effects on two earthworm species. Water, Air, and Soil Pollution. 129: 319-332.
Enllaç
Doi: 10.1023/A:1010335816237

Resum:

Some biological effects of soil fertilisation with sewage sludge were investigated after soil reclamation in an opencast mining area. Two earthworm species (Allolobophora chlorotica chlorotica and Nicodrilus caliginosus meridionalis) inhabiting the reclaimed soil were tested for their response to two high doses of sludge (75 and 150 g kg-1 of dry sludge in dry sieved soil). The metal concentrations in the sludge amended soils were below that which worm mortality would be expected. Mean annual density of the earthworms was higher in the plots where the sludge was applied (435 and 335 ind. m-2) than in control (115 ind. m-2). We verified the accumulation of Cd and Zn by the two earthworm species at any dose of sludge, and metal accumulation was higher in N. caliginosus than in A. chlorotica. Zn, Pb, Cr, Cu and Ni were more concentrated in the earthworm egesta than in the bulk soil.

Llegeix més

Spatial patterns of forest fires in Catalonia (NE of Spain) along the period 1975-1995 analysis of vegetation recovery after fire

Díaz-Delgado R., Pons X. (2001) Spatial patterns of forest fires in Catalonia (NE of Spain) along the period 1975-1995 analysis of vegetation recovery after fire. Forest Ecology and Management. 147: 67-74.
Enllaç
Doi: 10.1016/S0378-1127(00)00434-5

Resum:

This paper revises the results of applying a semiautomatic methodology for fire scars mapping from a time series of Landsat MSS images over the forest and shrubby surface of Catalonia (1975-1993). Perimeters of fires which occurred in 1994 and 1995 were added enlarging the whole series to 21 years from TM imagery. Results are a map series of fire history during 21 years as well as a map of the fire recurrence level. Omission errors are 23% for burned areas greater than 2 km2 while commission errors are 8% for areas greater than 0.5 km2. Detected fire scars were incorporated into a geographic information system in order to characterise the fire regime of the study area. Fire size distribution and the number of spot fires originated from each fire as well as the maximum distance reached from the main fire are analysed. A first approach to monitor post-burn regeneration through normalised difference vegetation index is also shown. © 2001 Elsevier Science B.V.

Llegeix més

Formicine ants comply with the size-grain hypothesis

Espadaler X., Gómez C. (2001) Formicine ants comply with the size-grain hypothesis. Functional Ecology. 15: 136-138.
Enllaç
Doi: 10.1046/j.1365-2435.2001.00490.x

Resum:

[No abstract available]

Llegeix més

A comparison of the medieval and the current fire regimes in managed pine forests of Catalonia (NE Spain).

Lloret F, Marí G (2001) A comparison of the medieval and the current fire regimes in managed pine forests of Catalonia (NE Spain). Forest Ecology and Management 141:155-163.

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