Henk Tennekes
5057 resultaten
Die IUCN stuft das Präriehuhn je nach Unterart als gefährdet bis stark gefährdet ein
13 augustus 2012Das Präriehuhn (Tympanuchus cupido) gehört zur Ordnung der Raufußhühner. Es kommt in mehreren Unterarten, Großes Prairiehuhn (T. c. pinnatus), Attwari…Prairievogels
Swift decline of 40% in Britain in the past decade
10 augustus 2012The swifts are going now from our village. Perhaps we should pause to enjoy them one last time before the…Overige insecten
Why we all need to worry about the decline in native butterflies
10 augustus 2012Although butterflies may seem like an attractive addition to your flower garden they are a more important insect than most…Vlinders
Meadow Pipits dwindling in Northern Ireland
9 augustus 2012Latest figures from the Breeding Bird Survey (BBS) reveal that numbers of Meadow Pipits declined by nearly a third in…Weidevogels
Crisis in the hills
9 augustus 2012Ornithologists in Wales have expressed shock at the findings of a range of independent surveys carried out across Wales in…Hoogland vogels
Pesticide tests fail the bees
9 augustus 2012Why have beekeepers been let down by our alleged system of pesticide-testing? Is it just sheer incompetence, or is there…Bijen
La faillite de l’évaluation des pesticides sur les abeilles
9 augustus 2012Le coupable est-il plutôt l'incompétence ou l'accumulation de conflits d'intérêts ? Impossible de trancher. Mais la question est désormais posée…Bijen
The corn bunting, once one of Scotland’s most common birds, is facing extinction north of the Border
9 augustus 2012The distinctive corn bunting Miliaria calandra, known to farmers as “the fat bird of the barley”, is under threat. The…Akkervogels
IUCN Task Force on Systemic Pesticides (TFSP) Forum in Tokyo in September, 2012
9 augustus 2012Recognizing that the rapidly growing global use of highly persistent systemic pesticides, that are unprecedentedly toxic to invertebrates (including all…Algemeen
Vlaanderen is een vlinderkerkhof
8 augustus 2012Dr Dirk Maes van het Vlaamse Instituut voor Natuurbehoud en dr Hans Van Dyck van de Universiteit Antwerpen beschrijven in…Vlinders
Das Bienensterben ist in der Steiermark so groß wie noch nie
8 augustus 2012Laut einer Studie der Uni Graz überlebte ein Viertel der Bienenvölker den Winter nicht. Seit fünf Jahren wird an der…Bijen
Het spiegeldikkopje is in vrije val
8 augustus 2012Het gaat de laatste jaren slecht met het spiegeldikkopje (Heteropterus morpheus). Er zijn nog maar een paar plekken waar deze…Vlinders
Insektizide belasten Gewässer an deutschen Äckern
8 augustus 2012Forscher haben Gewässer an deutschen Äckern auf Insektizide geprüft - und melden erschreckende Befunde. Die Giftbelastung liegt teilweise um ein…
Het ultieme bewijs dat imidacloprid bijensterfte veroorzaakt is geleverd
4 augustus 2012Het ultieme bewijs voor de bepalende rol van het neonicotinoide insecticide imidacloprid bij de sinds enkele jaren sterk verhoogde bijenvolksterfte…Bijen
Imidacloprid Pollution in Surface- and Groundwater by Paddy Rice Cultivation in Northern Vietnam
2 augustus 2012This study was designed to examine the environmental exposure of surface- and groundwater pollution in remote mountainous regions of northern…
Imidacloprid contamination of surface water in areas with open ground and greenhouse horticultural crops in Sweden
2 augustus 2012The aim of this investigation was to broaden our knowledge of possible leaching to water of pesticides used in field…
Intoxication of soil bacteria by imidacloprid
1 augustus 2012An investigation was carried out to study the effect of imidacloprid on bacterial (Brevundimonas sp. MJ15) populations in soil. In…
Cumulative ecological impacts of two successive annual treatments of imidacloprid and fipronil on aquatic communities of paddy mesocosms
1 augustus 2012The cumulative ecological impacts on aquatic paddy communities and their recovery processes after two successive annual applications of two systemic…Overige insecten
Zorgen om verontreiniging waterwingebieden in Overijssel
1 augustus 2012Drinkwaterbedrijf Vitens maakt zich zorgen over de kwetsbaarheid van waterwingebieden in Overijssel. In Overijssel laten de bodemlagen sneller vervuiling door.…
Poppies are disappearing from the British countryside
1 augustus 2012Some of the most well-loved flowers of the British countryside are disappearing from arable fields, conservationists warned today. Cornflowers, corn…Bijen
The curlew is facing extinction in Wales
1 augustus 2012Europe's largest wading bird, the curlew Numenius arquata, is facing extinction in Wales. The RSPB now think there could be…Hoogland vogels
The Blue Crane, the national bird of South Africa, remains endangered
1 augustus 2012South Africa's national bird, the blue crane (Anthropoides paradiseus), also known as the Stanley Crane and the Paradise Crane, remains…Hoogland vogels
De Argusvlinder lijkt wel van het toneel verdwenen
31 juli 2012Vroeger was de Argusvlinder (Lasiommata megera) bijna overal in Vlaanderen algemeen, maar momenteel is hij praktisch nergens meer te vinden.…Vlinders
Das Auerhuhn, die Blauracke und die Kornweihe sind ausgestorben in Berlin und Brandenburg
31 juli 2012Rund 5000 Arbeitsstunden haben ehrenamtliche Ornithologen aus Cottbus und dem Spree-Neiße-Kreis in den Brutvogel-Atlas der Länder Berlin und Brandenburg investiert.…Algemeen
