Or that will give you access to all the latest news from around the world as well as push notifications for any breaking news because they use the d w app to send us your photos and videos. Or watching t w news live from berlin up next a documentary about the consequences of the worlds diminishing insect population on the fly and for turning. Theres a mighty drama going on right in front of our eyes and insects are dying on maps and theres no end in sight. Were losing the identity of our planet your shit isnt a minute to twelve yet but it is five to its world. Man is exploiting the earth and penetrating to its farthest reaches regardless of the harm he is doing. Going through i think open bank cuts i used to have an ice scraper in my car to get Rolling Shitloads of a call for folks like you just dont need that insects play a crucial role in Life On Earth what would happen without them my muscly must assume that in time ecosystems will collapse is just a record of. Insects
are at the very start of our food chain but their numbers are dwindling fast and that is in danger in the entire terrestrial life cycle and man is the cause as he has been for decades. But for martin dog and his comrades in arms from the Entomological Association in clapham its nothing new. As a listener and this is in fact weve recognised and publicized the development of species decline in insects for a long time outside the book on the first english says in the us in the water this you can see it in the red lists. No matter which country you take. You have the strong trends in species decline in certain regions everywhere like. The current Felt Scientists wanted to find out how dramatic this decline really is
and started by reevaluating their long term observations. Hines fun has been measuring the incidence of Flying Insects for decades often at the same locations he always uses the same special trap this was on the is that whats special about these traps is that weve been putting them in his type of buildings since the eightys always facing some us you know all squishy lawsuit every insect that comes up against this black screen recognizes it as an obstacle ok and then oriented south towards the light and calls our ports club and the whole. The quest for Teens Containers hold a scientific treasure which is now being mined piece by piece there surveys form the basis for current inventories worldwide. Fossum it Isnt This Type Of Insect Travel allows us to capture a much broader section of biodiversity of Flying Insects. Weve been doing it
in this standardized form for such a long time and can now compare every new location in every new Research Project with its entire series because the complete sample materials are available in our archives thats a pool. In. For the act. Their measurements are so valuable because they are the only ones to have monitored Insect Populations using the same procedures for over thirty years. But only now has a detailed comparison of the data showing the dramatic extent of insects declining. To make an function f. And the amounts vary from year to year alone i notice that but overall the number is dropping quickly and you cant miss it as you can see that from the samples and we can represent it using the weighted results as a basis. In law daughter. Isnt
it there are two samples from the same site one was taken after fourteen days in one thousand nine hundred. And the other after fourteen days in twenty Sixteen ThousandTalk Strummed Site so told in session. The change is obvious Insect Populations have declined by up to seventy five percent over the past twenty seven years every Species Group has been affected pollinators scavengers herbivores and carnivores. Nobody knows how many species have disappeared completely. But the alarming scale of Insect Mortality has shaken experts around the world and. Certainly the scientific world was horrified to see the report that Insect Populations had declined so dramatically you know down by three quarters in some areas and this is shocking
this is truly shocking because insects are the you know of course there are the. Close to the bottom of the food chain of of life. But there also most of the Animal Diversity of the planet and a tradition says this is actually quite fatal because the decline in insects indicates that something is changing dramatically in our environment. And we humans are part of that environment via mentions and sometimes we forget that thats a guess. But lets just say i think the situation is very serious is and its were not talking about a sixth extinction or nothing when youre almost forces were facing some irreversible changes when species disappear they cannot be resurrected. Has man underestimated the value of insects just because theyre so small. Theyre pollination is the only thing that allows many plants to germinate the very
survival of many plants fruits and vegetables is threatened by the disappearance of the insects that flying from flower to flower in search of the butterflies are among them. Butterfly experts Detlef Colics sees this mass mortality in our environment at first hand during his regular nightly rambles through the forests. Hes Counting Moths using wine mixed with sugar to attract species that do not react to light onto the tree bark. Others follow the beam of light and land in his net. He was standing here in the middle of a Nature Reserve in a forest with he flat and that has developed close to nature in an extremely
species rich habitat its a warm evening in mid august so the screen should be covered in insects so we ought to expect about two or Three Hundred butterflies so it was really scary. How few there are this year honestly and free. Form the Largest Group but the light and colleagues wine and Sugar Mixture on the bark of the trees today attract virtually none at all. They arent just rippling. Theyre no longer even present. And in general they arent as highly endangered as most in six pieces. The number of species and the number of individual insects have declined especially over the last twenty years of. His observations are included in the red lists of endangered species one reason for the decline is the lights in our cities. This question for an a list for by that we mean like Pollution Lighting is now only present at least in our society and which the torch that im using has a mixed light bulb and we also use Mercury Vapor labs for these are actually the standard wide spectrum st like sources particularly in the short when for age and that attracts many nocturnal insects and scenes of. Light pollution alone is not to blame for the dramatic decline. There is no one single factor that influences everything the diversity of interrelationships between the various sources of threat that accounts for the massive decline. Of the masses in the uk and all. Animal species are dying out before man has even comprehend it what they actually do interludes
behavioral scientists are trying to find out how bumble bees find their way around and what that means for their survival. Much yearly Overalls Team has bred their own Bumble Bee Colony for their experiments. Bumble bees are free roaming the colonies collectors often take identical fly past. The bees apparently communicate with each other. But what criteria do they use to select their routes. Are probably easy even able to estimate and memorize distances. What were trying to understand is how bumble bees develop their route between flowers in a Natural Environment in fact what we do is follow the bumblebees visits to the flowers with a Motion Detection Camera Sr and as you can see we have several specially prepared artificial flowers in his tent and by analyzing all the video clips from the different went cams we can trace the bumblebees individual trajectories. To match the videos of the flight. Routes to individual insects the researchers mark the bumblebees backs placing the numbers in such a way as to not disturb them. Because we want to understand how the hives forages the lungs you go to get food choose where to go and then farm and once they know the different locations the different flowers whether they somehow optimize their journey to visit all these flowers and then return to the higher. Plastic boxes with blue and yellow lives are used to imitate the flowers. The blue leds are sprinkled with water and they get the ones with the Sugar Mixture. This makes them an attractive source of food for the forgers. The researchers repeat the experiment several times varying the locations and number of flowers. And. Look for the experiment they measure which grew from the hive to the flowers is the shortest. Character to put with his experiments weve been able to demonstrate that bumble bees and honey bees are able to optimize the path between a small number of artificial flowers between five and ten of them by Trial And Error because these individual beings will be able to find the shortest route to reach all the flowers and then return. We find it fascinating because calculating a route like that is very complex mathematically. Each complex. The smallest disturbances can throw the Bumblebees Complex Orientation System completely out of kilter. So what irritates them most. Secure the border is that we know that bees are exposed to certain doses of saba
lethal i. E. Normally fatal pesticides. Become disoriented if that happens it stops them finding their optimal foraging routes and they tend to bring last food back to the hive which i could any. That means less food for the colony which could snowball and lead to a sudden decline in which they could. I agricultural pesticides are thought to be the main culprits. France has already banned five pesticides containing naomi Katrina Lloyds but are pesticides really responsible for the massive death of bees and bumblebees. Calms him or scotts and his team from holland want to know more about this and are running different tests using Products Farmers actually use against wheat not insects. They are carrying out tests on roundup a week killer widely used in agriculture. Its manufacturers claim neither round up
nor gleick for state in general is toxic. The researchers are looking at whether the substances influence the bees heartbeat. Theyre starting with a Laboratory Experiment where the Heart Function of the bee is maintained at a constant level. That have had no contact with life for say have a heart beat of about Two Hundred Twenty to Two Hundred Forty beats per minute. But the heart rate of bees that have been in contact with roundup drops by eighty percent after about ten minutes to about fifty heart beats per minute. So. It takes around an hour for it to return to normal. To. Be a compass as weve found that round up and go lifeless eight reduce the beans heart
rates as up as it. Is fuzzy to just. Glyphosate weakens it that means when the heart beat in the living will be slowed there is less oxygen available to the brain and other organs so if you were to. Carts then investigates the influence of life is a uncontaminated b. s the results are clear from ten to fifteen minutes after the bees have received declined to say concentration equivalent to that in fields their heart rate drops by twenty to thirty percent. About it i didnt actually expect these effects because im glad to say it is not very toxic so it doesnt kill the bee and i had actually assumed it was a substance that was only supposed to work on plants and didnt play a role in insects so wide rather assumed that i wouldnt find anything which would have been reassuring. What consequences does this
anaesthetise have for honeybees that end up in a glyphosate treated field in search of food. In a comparative test team again feed the yellow label b. S. With life is a mixture. In fact the effects of chemical zombies have already been proven several times in comparable tests. As far as honeybees are concerned the texan products certainly do have an effect they weaken them but other factors also play a crucial part but as far as wild bees are concerned i would say that weed killer certainly play a decisive role in fact. The test is trying to prove the glaive to say irritates the bees when they return to their own colony. A Control Group marked with white has been given a water Sugar Mixture that resembles plant nectar. Both groups of beans are released simultaneously. The bees normal reaction is to
fly out orientate themselves and then fly back to the hive which the white ones do. They return immediately. The yellow ones on average take much longer and some even fall by the wayside. Toxic substances put solitary bees at risk of losing their brood. Been forgotten disposals up to four b. Colonies can withstand this sort of destruction of the two but if other insects become disoriented then of course you can have fatal consequences of alpha that is a fatah is. Interested. In chemicals disturb stun or kill our insects. They influence their behavior prevent them from finding their own hives and starve their brutes to death. Or hamper them in their
search for a partner so they dont even produce offspring in the first place. Either way the consequences are clear there are fewer and sex. Union. Anything. Pesticides arent the only things threatening the survival of beasts and also beetles dragonflies and however flies. Biologist tayo chandrika is examining colonies of bumblebees. By weighing their hives you can tell how they are developing. Effects like in fish even if it works here we compare different environments where bumble bees are so much for example places of a very poor resources with places that are very rich and then we see what the difference is and then to zene view that winter shape is. One of the things his studies have shown is that the spread of agricultural deserts huge fields completely lacking in flowering strips are damaging the reproductive cycles of both bumble bees and other wild bees. Less nectar means less nourishment for their own offspring let alone new queen bees. Charged things clearing the green strips is harmful as using chemical pesticides. Was fun too recently most people probably didnt even realize that the mortality doesnt only affect honeybees but about Five Hundred Sixty species of while the bean which are really the Crucial Group they are simply dying out and thats leading to disaster and it turns out that the wild bees are especially important
because they are much more effective pollinators than honey. Creating. A new speech each child is a ph d. Student. She wants to prove that wild bees are of much greater importance for fruit and Vegetable Production that has previously been assumed she compares the flowers of beans and tomatoes pollinated under different conditions and with and without using bumble bees. In many greenhouses tomatoes have long since been manually pollinated. Yeah here weve put some of the Tomato Blossoms into bags to test how the fruits develop with pollination and to test. To. It the stovl as. We compare the flowers on the rest of the plant with those the bumble bees cant get at to see whether it makes a difference weve already done this with strawberries where weve noticed the
differences we only got the big red strawberries we love so much when pollinators were present. In the union. As far as honey bees are concerned researchers have long known what is affecting them and how to protect them. With the while beans on the other hand they know much less. Has launched a huge field trial he wants to know if wild beasts fare better in great fields. As continued as if there is some evidence that it is also very important for the bees not only to absorb the problem from one species to reproduce but for many important. Dr klaus felix has some grapes on half of each plot giving the other half over to various other plants. The experiment is intended to show whether different plants influence the wild bees reproductive capacities mission to sit around for im especially interested in what kind of pollen was actually collected. You can see under the microscope which plant the pollen comes from on im taking a small sample so as not to influence the bees development but which will still allow me to determine which plants they actually collected the pollen from in court and design it out. Most wild bees are solitary the females lay their eggs in caves building a parcel for each one where they also store pollens as food for their offspring. With wild bees lose their orientation during the egg laying period the offspring die. Even the disappearance of insects whose usefulness has long been recognized has been ignored Butterfly Researchers have regularly sounded the alarm when a species disappeared but that was really all. Nobody cared about more in conspicuous insects. Man simply refused to take them seriously and drove
them out of the environment. Insects are seen as pests. Or or then you have the butterflies which are beautiful but people think that they are not necessary. Because they dont. Directly. And many insects are nuisances we have mosquitoes biting or sort of. We dont like that so we want to get rid of them. So. Insects tend to be. Vilified in a way which is which is not a good thing the phenomenon is much better understood in mammals a