ecologists

"When wanders through , he's able to look beyond the half-million cubic yards of soil hauled in by its designers, Frederick Law Olmsted and , to fill in what was mostly a swampy bog surrounded by and . He can trace the shoreline of the long, narrow lake that lay along what is now , north of the , with its tidal outlets that meandered through salt marsh to the . From the west, he can see a pair of streams entering the lake that drained the slope of 's major ridgeline, a deer mountain lion trail known today as ."

"I came to the Bronx as an ecologist to work for the (the 's parent organization), a New York City cultivation institution with a century-long dedication to and s around the world. My task was to bring technical aspects of modern geography into its global mission to save tigers, elephants, whales, s, and other ... More than most disciplines, ecology thrives on complexity, and ecology in the service of conservation (a subdiscipline called ) pulls one rapidly into the domains of economics, society, and politics."

"On a hot, fair day, the twelfth of September, 1609, and a small crew of Dutch and English sailors rode the flood tide up a great , past a long, wooded island at latitude 40º 48' north, on the edge of the North American continent. Locally the island was called Mannahatta, or "Island of Many Hills." … Mannahatta had more per acre than , more native plant species per acre than , and more birds than the . Mannahatta housed wolves, s, s, s, , and s; whales, s, , and the occasional visited its harbor. Millions of birds of more than a hundred and fifty different species flew over the island annually on transcontinental s; millions of fish—, , , , and –swam past the island up the and in its streams during annual rites of spring."

"struggle to decide how many animals to save. In this article, I outline 18 approaches to setting population target levels (PTLs) for animals, with rules of thumb and analytical recommendations for each approach. , the most common target level, are necessary but not sufficient for most efforts, given the range of values that bear on conservation. Reference s, either extant or historical, are key for setting practical target levels. Setting PTLs sufficient for conserved populations to be animals in all respects (including functional, social, landscape, ethical, aesthetic, and spiritual aspects) is a critical consensus point. In many cases densities as well as overall population size will need to be specified. I suggest a four-tiered system of setting incrementally higher population target levels such that conservation provides first for demographic sustainability, then ecological integrity, then , and finally , based on times when human beings had less impact on the planet than we do today."

"We have stayed committed to the Party's decision to establish Comrade Xi Jinping's core position on the Party Central Committee and in the Party as a whole."

"Prof. Semesi had many international contacts, and worked with scientists in the Eastern African region as well as Europe, the Americas and Asia. She was the first botany co-ordinator for the Sida/SAREC bilateral Marine Science Programme, and the programme owes much of its progress to her important input. It was while in this programme that Adelaida Semesi had the idea of producing this flora. She realised the great need and potential for seaweed research in Tanzania and understood the usefulness of a simple identification tool. During the years, she has continually inspired the work with enthusiasm and a sense for the practical. Apart from being an excellent scientist, Professor Semesi was also a very warm and special person. We who had the pleasure of working with her during these years miss her deeply."

"Over 20,000 girls have gained access to education. Without, 20,000 plus would have gone another way. FAWE has impacted over 15,000 girls to get integrated into science, mathematics and technology – or engineering for that matter. FAWE has picked girls everybody else has dropped."

"Scientists now routinely utilize the genetic information in biological macromolecules—proteins and DNA—to address numerous aspects of the behaviors, life histories, and evolutionary relationships of organisms. When used to best effect, molecular data are integrated with information from such fields as , , , , and paleontology. These time-honored biological disciplines remain highly active today, but each has been enriched if not rejuvenated by contact with the relatively young but burgeoning field of molecular evolution."

"Phylogeography is a field of study concerned with the principles and processes governing the geographic distribution of genealogical lineages, especially those within and among closely related species. As the word implies, phylogeography deals with historical, phylogenetic components of the spatial distributions of gene lineages. In other words, time and space are the jointly considered axes of phylogeography onto which (ideally) are mapped particular gene genealogies of interest ... The analysis and interpretation of lineage distributions usually require extensive input from molecular genetics, population genetics, ethology, demography, phylogenetic biology, paleontology, geology, and historical geography. Thus, phylogeography is an integrative endeavor that lies at an important crossroads of diverse microevolutionary and macroevolutionary disciplines ..."

"An example of how this is the best of times for evolutionary biology is provided by the recent elucidation of a draft sequence of all 3-billion-plus nucleotide pairs in the human genome et al. 2001, et al. 2001). ... Some prognosticators believe that the application of recombinant DNA methods to gene therapy and gene replacement (the repair or replacement of defective genes in the body) soon may lead to a revolution in the history of medicine comparable to the introductions of sanitation, anesthesia, and antibiotics and vaccines. If the new recombinant gene technologies live up to their early billing, we or our children might see a day when gene therapy can alleviate sickle cell anemia, heart disease, cancer, or various other human genetic disorders. Just as we may marvel at our forebears' fortitude in the dark ages before the advent of our modern medicine, our grandchildren may look back with marvel at our fortitude in the era preceding the wide availability of gene therapies. Nonetheless, the technical hurdles remain daunting. … … Ecologists and natural historians are painfully aware that the subject matter of their devotion—biodiversity—is under assault worldwide as the continents fill with people. The collective weight of human activities is leading to the disappearance of wilderness. Atmosphere and oceans are being polluted, marine fisheries are collapsing worldwide, and wetlands and freshwater aquifers have shrunk dramatically. In short, Earth's renewable and nonrenewable resources are being tragically squandered. In the Amazon Basin, for example, which is famous for its rich biota, slash-and-burn fires are so numerous that their light is visible to astronauts in the space shuttle. Some of these astronauts have felt moved to speak in a deeply spiritual tenor about the beauty of the “blue planet” and to bemoan how we are despoiling this special, fragile place."

"Recent genome-sequencing efforts have confirmed that traditional "good-citizen" genes (those that encode functional RNA and protein molecules of obvious benefit to the organism) constitute only a small fraction of the genomic populace in humans and other multicellular creatures. The rest of the DNA sequence includes an astonishing collection of noncoding regions, regulatory modules, deadbeat pseudogenes, legions of repetitive elements, and hosts of oft-shifty, self-interested nomads, renegades, and immigrants. To help visualize functional operations in such intracellular genomic societies and to better encapsulate the evolutionary origins of complex genomes, new and evocative metaphors may be both entertaining and research-stimulating."

"For the highest function of science is to give us an understanding of consequences."

"I have committed my life to fighting for climate justice, this is our planet, and we are all responsible for taking care of it"

"‘My success is in my students’ achievements.’"

"Human activities are the main contributors to climate change"

"We’ve separated ourselves from nature so much that it’s to our own demise, right? We feel that we’re separate and superior to nature and that we can use it, that we have dominion over nature. This premise runs throughout our religion, our education systems, our economic systems. It is pervasive. And the result is that we have loss of old-growth forests. Our fisheries are collapsing. We’re in a mass extinction. I think a lot of this comes from feeling like we’re not part of nature, that we can command and control it. But we can’t."

"“For the last 500 years, we’ve had this worldview that forests and nature are here for our taking, that we can exploit them and not give back – that is a very unhealthy and unsustainable worldview. What gives me hope is my kids, my students, the next generations. They are so creative and ingenious – they’re like the forest. The forest bounces back, it regenerates, it creates new space for itself. So do our kids. When I teach kids or hang around with my own children, I have complete faith that we are going to figure our way out of this.”"

"It is only when one ascends the mountains that the grand panorama is unfolded, and the book of nature is spread out, as it were, where an invitation is extended to all who will read."

"Globally, beef provides just 2 per cent of the calories we consume, yet 60 per cent of the world’s agricultural land is used for beef production."

"Similar issues affect the 211,000 km2 protected by the USA’s sixty-two National Parks. These are supposed to be wilderness areas unaffected by man’s activities, yet many are affected by oil and gas drilling, or by invasive species, while quite a few allow hunting, and climate change is affecting them all. The Everglades National Park, for example, is being damaged by over-extraction of water to irrigate crops, by fertiliser and pesticide pollution, and by no fewer than 1,392 different invasive species, spanning everything from Burmese pythons to spreading spans of Australian tea trees. It is clear that trying to set aside areas for nature has not been adequate as a strategy to prevent biodiversity loss – though nature reserves undoubtedly have value – and that we need to do much more. We do not have to continue headlong towards environmental Armageddon, but to halt this process requires us to recognize that our current strategies are not working, and that we cannot carry on as we have in the past. It is not too late to save our planet, but to do so we need to learn to live alongside nature, to value and cherish it, to respect all life as equal to our own, especially the small creatures."

"If one was designing a system from scratch to feed the world with healthy food in a sustainable, environmentally-friendly way, it would look nothing like our current forming system."

"If one looks at the bigger picture, modern farming is part of a staggeringly inefficient, cruel and environmentally damaging food-supply system."

"Suppose one were to invent a new wheat variety that gave twice the yield. Would the world’s wheat farmers turn half their land over to nature? Of course not. Wheat prices would collapse, and we would find ever-more-wasteful ways of using the surplus, for example by feeding more to animals or using more for biofuels. The farmers would end up farming harder than ever to make ends meet, and nature would not benefit at all."

"I am not suggesting that petitions are a waste of time – they actually take up very little time – but don’t expect them to achieve much. There is a danger that people feel that the job is done, just because their favoured petition has reached a certain number of signatures. We will not save the planet simply by signing petitions, no matter how many we sign; they are a little more than a displacement activity."

"I have never grasped why some folk are so desperate to have a perfectly uniform, green lawn, unmarred by pretty flowers. The concept of a ‘weed’ is entirely within our heads; one man’s weed is another’s beautiful wildflower. If we could somehow engineer a shift in attitude, so that ‘weeds’ such as daisies or clovers were seen as desirable additions to a lawn, rather than enemies to be battled against, we would save ourselves an awful lot of time, money and stress, while helping nature into the bargain."

"The £3.5 billion a year in farm subsidies currently takes taxpayers’ money and uses it to support an industrial farming system that produces copious greenhouse gases, damages the soil, overgrazes the uplands, employs few people, pollutes rivers with fertilisers and pesticides, drives wildlife declines, and over-produces unhealthy food stuffs while under-producing food that is good for us. Why exactly should we pay our hard-earned taxes to subsidise all of this?"

"The fundamental problem with the Paris Agreement is that it has no teeth at all. It relies entirely on countries choosing to cut their own emissions, with no penalty if they fail. It is very easy for a government to make a long-term promise, knowing that different politicians will be in charge by the time any reckoning is due. One only has to look at the 1992 Rio Convention on Biological Diversity, which was signed by almost exactly the same group of 196 governments as signed the Paris Agreement. In the Rio Convention our governments promised to halt the loss of global biodiversity by 2020. In reality, the period 1992 to 2020 has seen the greatest loss of global biodiversity for at least 65 million years. We cannot rely on the empty promises of our governments to save our planet."

"As with most new technologies, however, our enthusiasm for the benefits blinded us for sometime to the downsides."

"It took many millions of years for evolution to slowly create unique assemblages of plants and animals in each region of our planet, and only a couple of hundred years for us to muddle them up."

"We are committing ecocide on a biblical scale. I am in no way religious, but if you are, consider this; do you really think God created wonderful diversity and gave us dominion over it so that we could exterminate it? Do you really think He or She is pleased with what we have done?"

"For me, the economic value of insects is just a tool with which to bash politicians over the head. They only seem to value money, so I point out to them that insects contribute to the economy. But if I’m honest, their economic worth has nothing whatsoever to do with why I try to champion their cause. I do it because I think they are wonderful."

"Glyphosate is a general-purpose herbicide, killing any plant it touches. It is systemic, which means that it spreads through the tissues of the plant to kill the roots. I hate to admit this now, but I once used to use it quite a lot in my garden, as I believed the manufacturers when they claimed that it was non-toxic to wildlife and broke down very quickly in the environment. I used to be very naïve."

"Supporters of the chemtrail theory are generally dismissed as crackpots, and rightly so, because it is absurd to believe that a conspiracy on the scale they describe could possibly be kept quiet. It is not much more plausible than suggesting that the Earth is flat."

"One theory as to why metamorphosis is such a successful strategy is that it enables the immature stages and the adults to each specialise in different tasks, and to have a body designed for the purpose.‡ ‡Please note that I am not suggesting intelligent design by a supreme being. ‘Design’ is shorthand for the blind tinkering of evolution over millennia."

"Ants alone outnumber us by about one million to one. Until perhaps the last 200 years, an alien looking down on Earth at any time in the last 400 million years would have concluded that this was the kingdom of the insects."

"Why he was asked to comment on a subject on which he has no expertise is unclear, but in these strange times it seems common for the opinions of celebrities to be valued regardless of qualifications or experience."

"Personally, I do not think we should dismiss GM technology. However, so far most GM crops have been developed by large corporations, with the clear goal of lining their pockets rather than benefiting people or the environment."

"Insecticides kill all insects, not just the ones that they are aimed at, whatever the doublethinkers who manufacture agrochemicals may ask you to believe."

"So, one can argue that insects are important, practically and economically, and one can argue that they bring us joy, inspiration and wonder, but both arguments are ultimately selfish, for both focus on what insects do for us. There is a final line of reasoning for looking after insects and the rest of the life on our planet, big and small, and it is one that is not focused on human well-being. One can argue that all of the organisms on Earth have as much right to be here as we do. If you are of a religious bent do you really think that God created all of this amazing life just so we could recklessly destroy it? Do you think He or She intended for coral reefs to be bleached and dead, littered with plastic trash? Does it seem plausible that He or She went to the trouble of creating five million species of insect so that we could drive many of them extinct without ever even registering their existence? If on the other hand you are not a believer, and accept the scientific evidence that species evolved over billions of years rather than being created by a supernatural being with a beetle obsession, then you must realize that we are just a particularly intelligent and destructive species of monkey, nothing more than one of the perhaps ten million species of animal and plant on Earth. In that view, nobody granted us dominion over the beasts; we have no God-given moral right to pillage, destroy and exterminate. Religious or not, most humans agree that the rich and powerful should not be allowed to oppress or dispossess the poor and powerless (though of course we do allow it to happen all the time). Similarly, in dozens of sci-fi movies from The War of the Worlds onwards, aliens more intelligent than ourselves arrive, decide that the human race is redundant, and set about wiping us out so they can plunder the Earth for their own ends, or build an interstellar bypass. Of course, in these films we see the aliens as the bad guys, and we root for the inferior humans who usually somehow triumph in the end despite the odds being stacked against them. When will we realise the hypocrisy of our position? On our own planet we are the bad guys, thoughtlessly annihilating life of all kinds for our own convenience. We intuitively grasp that the aliens of the movie Independence Day have no right to take our planet; I wonder what goes through the mind of an orang-utan as it sees its forest home bulldozed to the ground? There should not have to be a ‘point of slugs’ for us to allow them their existence. Do we not have a moral duty to look after our fellow travellers on planet Earth, beautiful or ugly, providing vital ecosystem services or utterly inconsequential, be they penguins, pandas, or silverfish?"

"‘Normal’ is different for every generation."

"These are beneficial creatures, and should be celebrated, not persecuted and poisoned in some misguided psychotic urge to kill anything that dares to thrive."

"It is sometimes said that humanity is at war with nature, but the word ‘war’ implies a two-way conflict. Our chemical onslaught on nature is more akin to genocide."

"Even today there are deniers, sadly including the previous President of the United States and many of his followers – but then there are also people who argue that the world is flat."

"Countries whose efforts are woefully inadequate, and likely to see us heading towards global warming of 4°C or more (catastrophic for all life on earth), include the USA, Saudi Arabia and Russia. It is perhaps not a coincidence that these three countries happen to be the three biggest oil producers in the world. One might be forgiven for suspecting that their heart is not really in tackling climate change at all. In the case of the USA this was made abundantly clear under the Trump administration."

"Some previous deliberate introductions of non-native species to Australia had gone horribly wrong: for example, cane toads from South America, introduced to help control sugar cane pests, have themselves become a plague, proliferating to the point where there are now estimated to be about 200 million of them, eating everything except the pests they were intended to control."

"One man’s weed is another man’s wildflower."

"Truth was defined by those who shouted loudest, or had the money to buy it."

"So far are we from fully appreciating the dire plight of the natural world that it is still regarded as a perfectly normal, acceptable hobby to kill animals for fun. Thirty-five million pheasants are reared and released each year in the UK alone, so that a small number of people can enjoy blasting away at these naïve, semi-tame animals. There are simply too many of us (and soon to be many more) for it to be acceptable to carry on killing animals for amusement. We need to somehow persuade everyone to treat our environment with respect, to teach children growing up that littering, killing, polluting, are just not socially acceptable. How can we do that when the supposedly great and the good slaughter pheasants and grouse just for weekend entertainment?"

"In recent decades the effects of environmental change on insect populations has been the focus of my research. It is widely recognised that invasive alien species, climate change and habitat destruction are all major players in the declines of many insects. Ladybirds are no exception."

"Natural history studies are fun, rewarding and an invaluable source of information."