Henk Tennekes

Met uitsterven bedreigde vogels zijn in Nederland steeds afhankelijker van natuurgebieden
26 november 2009Met uitsterven bedreigde vogels zijn in Nederland steeds afhankelijker van natuurgebieden. 60 procent van de zogenaamde Rode Lijstsoorten komt alleen…AlgemeenKamervragen over het falen van de subsidies voor agrarisch natuurbeheer
25 november 2009Subsidies helpen de weidevogel niet. De kemphaan Philomachus pugnax, de draaihals Jynx torquilla, de kuifleeuwerik Galerida cristata en de grauwe…
Environmental Fate of Imidacloprid
25 november 2009There are concerns regarding the long-term environmental fate and environmental persistence of the widely used insecticide imidacloprid. The 2005 sales…
Sterke afname van vlinders in Nederland en Vlaanderen – West-Nederland opvallend arm aan vlinders
25 november 2009In Nederland was het aantal dagvlinders nog nooit zo laag als in 2008. Op een gemiddelde algemene route werden nog…Vlinders
Imidacloprid gebruik op het niveau van 2004 maakt zware grond- en oppervlaktewaterverontreiniging onvermijdelijk
25 november 2009In 1995 gebruikten 2.381 bedrijven op een oppervlakte van 5.335 hectare in totaal 668 kilogram imidacloprid. In 2004 gebruikten 8.683…
Arthropods are relentlessly vanishing before our eyes
25 november 2009Western culture views insects and arachnids as pests and vermin that need to be controlled. They usually are not considered…Overige insecten
Pesticides are implicated in the decline of insects
25 november 2009With almost one million described species, insects eclipse all other forms of animal life on Earth, not only in sheer…Bijen
Normoverschrijdingen van Carbamaten en Organofosfaten in Nederlands Oppervlaktewater
25 november 2009Naast de enorme normoverschrijdingen van het voor insecten zeer schadelijke imidacloprid in het oppervlaktewater van de Randstad zijn sinds 2004…
Extreme Normoverschrijdingen van Imidacloprid in de Randstad
25 november 2009Sinds 2004 (toen de toelating van het insecticide imidacloprid ingrijpend verruimd werd) zijn extreme normoverschrijdingen van imidacloprid in het oppervlakte…
Skylark, Corn Bunting, Tree Sparrow and Northern Lapwing in sharp decline across Europe
25 november 2009The Wild Bird Indicator 2005 shows that on average over the last twenty-five years, farmland birds such as the Eurasian…Akkervogels
Common birds declining worldwide
25 november 2009Common birds are declining worldwide, providing evidence of a rapid deterioration in the global environment that is affecting all life…Algemeen
Farmland birds showed a significant decline across Europe between 1990 and 2000
25 november 2009Between 1990 and 2000, farmland birds showed a significant decline across Europe, a trend not shared by bird assemblages of…Akkervogels
Alarming Insect-eating Bird Declines in Canada
25 november 2009An article by Bird Studies Canada biologist Jon McCracken examines substantial population declines for ‘aerial insectivores ‘ – birds that…Overige insecten
Dramatic decline of an insectivorous passerine, the Whinchat
25 november 2009Insectivorous farmland passerines have declined steadily throughout most of western Europe over the past decades. The Whinchat Saxicola rubetra, an…Akkervogels
Songbirds on their way to extinction?
25 november 2009According to the latest update of "The Atlas of the Breeding Birds of Ontario" the list of songbird species in…Overige insecten
Recent Declines of Sacramento’s Purple Martins Worries Biologists
25 november 2009Sacramento’s remnant population of the Purple Martin Progne subis, a swallow recognized as a state Species of Special Concern, declined…Overige insecten
Sag mir, wo die Vögel sind
25 november 2009Naturschützer schlagen Alarm: Haussperling Passer domesticus, Pirol Oriolus oriolus und Uferschnepfe Limosa limosa werden immer seltener in unserem Land. Nach…Algemeen
The explanation for farmland bird declines – Loss of insect food could be a major factor
25 november 2009Research into the declines of some species of farmland birds have shown that there is no single reason, but that…Akkervogels
Comparative Losses of British Butterflies, Birds, and Plants and the Global Extinction Crisis
25 november 2009There is growing concern about increased population, regional, and global extinctions of species. A key question is whether extinction rates…Algemeen
Increased pesticide use has been a key cause of Grey Partridge decline
25 november 2009Population declines in many farmland bird species have been documented during the last quarter of the 20th century in parts…Akkervogels
Linking agricultural practice to insect and bird populations: a historical study over three decades
25 november 2009There is continuing debate about the impact of agricultural practices on farmland wildlife. In particular, it has been postulated that…Akkervogels
Insect crash at root of House Sparrow decline
25 november 2009Britain's House Sparrow Passer domesticus population has declined by 68 percent since 1977. Though still relatively plentiful in small towns…Overige insecten
Rapid declines of British moths provide evidence of an insect biodiversity crisis
25 november 2009A fundamental problem in estimating biodiversity loss is that very little quantitative data are available for insects, which comprise more…Overige insecten
40,000 ‘splatometers’ can’t be wrong: insect population is in decline
25 november 2009Nearly 40,000 conservation-minded drivers counted the bugs splattered on their vehicle number plates this summer, the Royal Society for the…Overige insecten





















