Henk Tennekes
5057 resultaten
De fitis gaat sinds de jaren 1990 in grote delen van Noord-West-Europa achteruit
5 december 2011De fitis Phylloscopus trochilus komt tijdens het broedseizoen (maart tot augustus) in geheel Midden- en Noord-Europa voor, en broedt in…Bosvogels
Local and landscape effects on bee communities of Hungarian winter cereal fields
4 december 2011The present study investigated the effects of farmland management and environmental factors at local and landscape scales on bees in…Bijen
Evidence for the decline of the western bumble bee (Bombus occidentalis Greene) in British Columbia
3 december 2011While the decline of B. franklini in southwestern U.S.A. and B. affinis in eastern North America have been well documented…Hommels
De broedpopulatie van de krakeend in Nederland is binnen enkele decennia geëxplodeerd
2 december 2011De krakeend Anas strepera is een typische soort van vrij grote wateren. In augustus bevinden de belangrijkste pleisterplaatsen zich in…Watervogels
Als broedvogel gaat het de wintertaling niet voor de wind – de aantallen namen de laatste decennia steeds verder af
2 december 2011De biotoop van de Wintertaling Anas crecca bestaat uit allerlei ondiepe, zowel zoete als zoute wateren. Tijdens en direct na…Kustvogels
Apple orchard pest control strategies affect bird communities in southeastern France
2 december 2011We compared the structure (abundance, species richness, and diversity) of breeding bird communities in 15 apple orchards in southeastern France…Akkervogels
Recent Declines of House Sparrows in Canada’s Maritime Provinces
1 december 2011House Sparrows (Passer domesticus) were introduced to North America after 1850, increased and spread up to 1920, and stabilized or…Akkervogels
Agricultural pesticide use has contributed significantly to the decline of imperiled species in Canada
1 december 2011Anthropogenic habitat loss is usually cited as the most important cause of recent species’ extinctions. We statistically compared areas in…AlgemeenCompatibility of Two Systemic Neonicotinoids with Various Natural Enemies of Agricultural Pests
30 november 2011Two systemic neonicotinoids, imidacloprid and thiamethoxam, are widely used for residual control of several insect pests in cotton (Gossypium spp.),…Overige insecten
Declines in forage availability for bumblebees in Britain
30 november 2011We quantified the relative value of native and long-established plant species as forage (nectar and pollen) resources for bumblebees by…HommelsMassive decline of Corn Buntings on east Scottish study areas in 1989–2007
30 november 2011Changes in summer numbers of adult Corn Buntings Emberiza calandra in a large sample of study areas holding discrete localized…Akkervogels
Butterflies are declining in the UK since the 1970s
30 november 2011From 2005 onwards, butterflies have been adopted as Governmental biodiversity indicators in England, Scotland and for the UK as a…Vlinders
Decline of Darwin’s finches on Santa Cruz Island (Galápagos) between 1997 and 2010
29 november 2011We used point counts to conduct systematic quantitative surveys of Darwin’s finches and other land birds on Santa Cruz Island…Algemeen
Duitstalige uitgave van Henk Tennekes boek ‘Disaster in the Making’ is verschenen in december 2011
29 november 2011De Duitse milieu-organisatie BUND (Bund für Umwelt und Naturschutz Deutschland) heeft in december 2011 een Duitstalige versie van het boek…AlgemeenOne out of seven European dragonflies are threatened
28 november 2011Dragonflies are colourful, relatively large, and well-known insects. Their larvae live in freshwater habitats such as lakes, bogs, seepages, rivers…Libellen
An ecological disaster that will affect us all
28 november 2011Insects are quietly but rapidly disappearing. Michael McCarthy explains why their loss is bad news for the planet.Bijen
In Obstgärten finden unzählige Tiergruppen ihren Lebensraum
27 november 2011In Obstgärten finden unzählige Tiergruppen ihren Lebensraum: Vögel, Fledermäuse, Schläfer, Igel, Spinnen, Schmetterlinge, Schwebfliegen, Käfer und weitere Insektengruppen. Über 1000…Bijen
Pipistrelles are thought to have undergone a significant decline in numbers in Britain
27 november 2011Bats are the world's only true flying mammals and one of the most diverse mammal groups on Earth. There are…Vleermuizen
Our gardens become feeding stations for bees, butterflies, bats, hedgehogs, birds and other wildlife provided you don’t use pesticides
27 november 2011We grow flowers in our gardens for our own enjoyment. But colour and perfume are really the plants’ way of…BijenU.S. bat populations have been declining at an alarming rate since 2006
26 november 2011The appropriately named fungus Geomyces destructans is the cause of deadly white-nose syndrome (WNS) in bats, according to research published…Vleermuizen
Many species of both common and uncommon birds in North America are in serious trouble
26 november 2011"Citizen birder" Bob Janssen, 79, has been watching and listing birds for more than six decades. He has compiled more…Algemeen
Distribution, Abundance, and Status of the Greater Sage-Grouse in Canada
25 november 2011We reviewed the historic and present distribution of Greater Sage-Grouse (Centrocercus urophasianus) in Canada and found that the species has…Prairievogels
Ottawa urged to protect sage grouse
25 november 2011A dozen environmental groups are threatening the federal government with legal action unless it overrules two provinces and takes emergency…Prairievogels
Australian birds face extinction crisis
24 november 2011The future of Australian birds is bleak, according to a new report called The Action Plan for Australian Birds 2010,…Algemeen
