Ibis
Công bố khoa học tiêu biểu
* Dữ liệu chỉ mang tính chất tham khảo
Sắp xếp:
Landscape‐scale socio‐economics of sea‐level riseFlooding due to sea‐level rise resulting from climate may have serious socio‐economic consequences. Socio‐economic impacts of an accelerated sea‐level rise are often described at an aggregated spatial level that is useful for inter‐regional or international comparisons, but this is of limited value for determining local effects. Local effects need to be based on the local attributes of coa... ...
Ibis - Tập 146 Số s1 - Trang 11-17 - 2004
Assessing the impacts of wind farms on birdsThe potential effects of the proposed increase in wind energy developments on birds are explored using information from studies of existing wind farms. Evidence of the four main effects, collision, displacement due to disturbance, barrier effects and habitat loss, is presented and discussed. The consequences of such effects may be direct mortality or more subtle changes to condition and br... ...
Ibis - Tập 148 Số s1 - Trang 29-42 - 2006
Non‐inversion tillage and farmland birds: a review with special reference to the UK and EuropeThis paper reviews the current knowledge of the effects of non‐inversion tillage (NIT) on farmland birds and their food resources. NIT is a method of establishing a crop without using a mouldboard plough and is becoming increasingly popular in the UK. NIT generally disturbs the soil to shallower depths than conventional tillage and is therefore expected to have beneficial effects on biodiv... ...
Ibis - Tập 146 Số s2 - Trang 192-202 - 2004
Designing mosaic landscapes for B lack G rouse T etrao tetrix using multi‐scaled modelsWith increasing pressures on land for human use, it is important to identify the habitat requirements of key species, not just in terms of a correlation with a given habitat feature, but also the relationship between species presence and its coverage, proximity to other habitat types, and importance at different spatial scales. We used maximum entropy to estimate the optimal proportions of... ...
Ibis - Tập 155 Số 4 - Trang 792-803 - 2013
DO TROPICAL BIRDS REAR AS MANY YOUNG AS THEY CAN NOURISH ?Summary.
The thesis that birds lay clutches of eggs which will produce as many nestlings as they can, on the average, adequately nourish, is considered in relation to the Central American avifauna. Birds whose usual rate of bringing food to the nest is s... ...
Ibis - Tập 91 Số 3 - Trang 430-455 - 1949
Do Levant Sparrowhawks Accipiter brevipes also migrate at night?Flight paths of visually identified Levant Sparrowhawks Accipiter brevipes on autumn migration were analysed with a tracking radar in the Arava Valley, Israel. This time of the year there are no significant numbers of other species with a similar wing‐beat pattern. This wing‐beat pattern was found not only in daytime but also frequently at night. It is suggested ... ...
Ibis - Tập 135 Số 3 - Trang 233-236 - 1993
Remote techniques for counting and estimating the number of bird–wind turbine collisions at sea: a reviewSince the early 1990s, marine wind farms have become a reality, with at least 13 000 offshore wind turbines currently proposed in European waters. There are public concerns that these man‐made structures will have a significant negative impact on the many bird populations migrating and wintering at sea. We assess the degree of usefulness and the limitations of different remote technologies... ...
Ibis - Tập 148 Số s1 - Trang 76-89 - 2006
Significance of the White Sea as a stopover for Bewick's Swans Cygnus columbianus bewickii in springWe searched for a major stopover site of Bewick's Swans Cygnus columbianus bewickii in the White Sea following the suggestion that one should exist on the stretch between Estonia and the breeding grounds (1750 km). We discovered 733 Swans in Dvina Bay during a late aerial survey in spring 1993. Subsequently, ground‐based research was carried out in May 1994, 1995... ...
Ibis - Tập 143 Số 1 - Trang 63-71 - 2001
Body size, fitness and compatibility in Barnacle GeeseBranta leucopsisLarge‐sized Barnacle GeeseBranta leucopsis of both sexes had a higher probability of breeding successfully in any particular year and produced more goslings than did smaller birds. Large females paired at an earlier age, suggesting that they were preferred as mates and were likely to have entered the breeding population earlier. The relative sizes of the pair bond... ...
Ibis - Tập 138 Số 4 - Trang 700-709 - 1996
Tổng số: 32
- 1
- 2
- 3
- 4