Hydrobiologi

THE INTERNATIONAL BESTSELLER: a deep dive into the science and nature of aging

Havets dyr og planter beskriver ca. 700 arter af dyr og planter fra tang til sæler, fx havsvampe, muslinger, krebsdyr, søpindsvin, fisk, laver, alger og blomsterplanter. Bogen omfatter alt hvad man kan finde fra stranden og ud til 20 (undtagelsesvis 40) meters dybde og dækker de nordeuropæiske havområder. Foruden kendetegn giver bogen oplysning om arternes biologi og anvendelse. Susanne Weitemeyers smukke og præcise tegninger sikrer korrekt artsbestemmelse.

Den hidtil mest omfattende bog om organismerne og levevilkårene i de ferske vande. Beskriver bl.a.:Planter, smådyr, fisk og fugleGennemgår de fysiske og kemiske forhold i vandet, stoffernes kredsløb og miljøproblemrne over de seneste 100 årBehandler vandmiljøplanerne og andre initiativer til forbedring af de ferske vandes tilstandHenvender sig især til studerende ved universiteterne og andre videregående undervisningsinstitutioner. Kan også bruges af biologer og naturforvaltere.

I den nye Steen Ulnits-bog, Laks & havørred, øser han ud af al sin viden om disse kongefisk. Undertitlen er Opgangsfisk, da der er særligt fokus på de forhold, der gør sig gældende, når man vil fange de fisk, der er på vej op i vandløb for at gyde. Desuden inddrages andre arter, fx Røding og Stalling, som har samme opgangsadfærd som Laksefisk.Bogen indeholder alt, hvad en fluefisker har brug for at vide, om standpladser, grejet, fluerne, fiskenes adfærd, teknikker og meget andet. Det hele er krydret med tipsbokse og rigtige lystfiskerhistorier!Både nybegyndere og øvede vil finde gode råd og ny viden i denne guldgrube af en lystfiskerbog.

I den nye Steen Ulnits-bog, Tørflue og nymfe, behandler han med sædvanlig kyndig hånd den fiskemetode, som regnes for den fineste inden for fluefiskeri. Fluefiskeri med tørflue og nymfe er en kunstart, der kræver indgående kendskab til insekternes liv, adfærd og formering.Bogen indeholder detaljeret viden om de for fisk – og fiskere – vigtigste insekter og deres levevis. Med indsigt i livet under vandet bliver fluefiskeren i stand til at vælge både rette tid, sted og flue, hvilket fører til flere fangede fisk!I Tørflue og nymfe er der ud over dybdegående kapitler om insekterne også kapitler om grejet, særlige teknikker, ørrederne og fluemønstre, så man kan binde sine egne tørfluer.De mange tipsbokse giver ekstra viden om særlige emner, og lystfiskerhistorierne fra så godt som hele verden gør Tørflue og nymfe til en sand læseoplevelse.

"From New York Times bestselling author Susan Casey, an awe-inspiring portrait of the mysterious world beneath the waves, and the men and women who seek to uncover its secrets For all of human history, the deep ocean has been a source of wonder and terror, an unknown realm that evoked a singular, compelling question: What's down there? Unable to answer this for centuries, people believed the deep was a sinister realm of fiendish creatures and deadly peril. But now, cutting-edge technologies allow scientists and explorers to dive miles beneath the surface, and we are beginning to understand this strange and exotic underworld: A place of soaring mountains, smoldering volcanoes, and valleys 7,000 feet deeper than Everest is high, where tectonic plates collide and separate, and extraordinary life forms operate under different rules. Far from a dark void, the deep is a vibrant realm that's home to pink gelatinous predators and shimmering creatures a hundred feet long and ancient animals with glass skeletons and sharks that live for half a millennium-among countless other marvels. Susan Casey is our premiere chronicler of the aquatic world. For The Underworld she traversed the globe, joining scientists and explorers on dives to the deepest places on the planet, interviewing the marine geologists, marine biologists, and oceanographers who are searching for knowledge in this vast unseen realm. She takes us on a fascinating journey through the history of deep-sea exploration, from the myths and legends of the ancient world to storied shipwrecks we can now reach on the bottom, to the first intrepid bathysphere pilots, to the scientists who are just beginning to understand the mind-blowing complexity and ecological importance of the quadrillions of creatures who live in realms long thought to be devoid of life. Throughout this journey, she learned how vital the deep is to the future of the planet, and how urgent it is that we understand it in a time of increasing threats from climate change, industrial fishing, pollution, and the mining companies that are also exploring its depths. The Underworld is Susan Casey's most beautiful and thrilling book yet, a gorgeous evocation of the natural world and a powerful call to arms"--

RADIO 4 BOOK OF THE WEEKFINANCIAL TIMES 2023 BOOK OF THE YEARTHE TIMES SCIENCE BOOK OF THE YEAR: 'This beautifully written, sweeping guide shows how the deep movement of the seas have ruled our lives in unexpected ways over millennia.''The world needs a 'David Attenborough for physics' and Helen Czerski is a prime contender - she's brilliant, clear, passionate, modern and inspiring.' - Emma Freud, BBC Radio 4 Loose Ends'A dazzle of stories beautifully told...Outstanding ... Her readers will see the seas anew.'Horatio Clare, Telegraph'Excellent and important.' Spectator'Czerski is a wonderful writer ... Blue Machine really does change the way you see the world.' Daily Mail'In Helen Czerski's hands, the mechanical becomes magical. An instant classic.'Tristan Gooley, author of How to Read Water'Blue Machine is quite simply one of the best books I have ever read.'Dr George McGavin, zoologist, entomologist and broadcaster'A fascinating dive into the essential engine that drives our world.'Gaia Vince, science journalist, broadcaster and author of Nomad Century All of the Earth's ocean, from the equator to the poles, is a single engine powered by sunlight - a blue machine. Earth is home to a huge story that is rarely told - that of our ocean. Not the fish or the dolphins, but the massive ocean engine itself: what it does, why it works, and the many ways it has influenced animals, weather and human history & culture. In a book that will recalibrate our view of this defining feature of our planet, physicist Helen Czerski dives deep to illuminate the murky depths of the ocean engine, examining the messengers, passengers and voyagers that live in it, travel over it, and survive because of it. From the ancient Polynesians who navigated the Pacific by reading the waves to permanent residents of the deep such as the Greenland shark that can live for hundreds of years, she explains the vast currents, invisible ocean walls and underwater waterfalls that all have their place in the ocean's complex, interlinked system. Timely, elegant and passionately argued, Blue Machine presents a fresh perspective on what it means to be a citizen of an ocean planet. The understanding it offers is crucial to our future. Drawing on years of experience at the forefront of marine science, Helen Czerski captures the magnitude and subtlety of Earth's defining feature, showing us the thrilling extent to which we are at the mercy of this great engine. ................................... 'Helen Czerski weaves together physics and biology, history and science, in a beautifully poetic way.'Professor Alice Roberts

They spawn in the middle of the ocean but spend their adult lives in freshwater. They can overcome seemingly insurmountable obstacles and even cross over land. They are revered as guardians and monster-seducers by New Zealand's Maori, yet are often viewed with disgust in the West. They are a multibillion-dollar business in the Asian food market. They are often mistaken for snakes. They are eels?one of the world's most amazing and least understood fish. (Yes, fish.) James Prosek offers a fascinating tour through the life history and cultural associations of the freshwater eel, exploring its biology, its myth and lore, its mystery and beauty. Eels is a mesmerizing biography of an intriguing and mysterious creature, as well as a telling look at humanity, the will to persist, and the ever-changing relationship between man and the natural world.

A captivating exploration of how underwater animals tap into sound to survive, and a clarion call for humans to address the ways we invade these critical soundscapes - from an award-winning science writer.For centuries humans ignored sound in the 'silent world' of the ocean, assuming that what we couldn't perceive, didn't exist. But we couldn't have been more wrong. Marine scientists now have the technology to record and study the complex interplay of the myriad sounds in the sea. Finally, we can trace how sounds travel with the currents, bounce from the seafloor and surface, bend with temperature, and even saltiness; how sounds help marine life survive; and how human noise can transform entire marine ecosystems.In Sing Like Fish, award-winning science journalist Amorina Kingdon synthesises historical discoveries with the latest research in a clear and compelling portrait of this sonic undersea world. From plainfin midshipman fish, whose swim-bladder drumming is so loud it keeps houseboat-dwellers awake, to the syntax of whalesong, from the deafening crackle of snapping shrimp, to underwater earthquakes and volcanoes, sound plays a vital role in feeding, mating, parenting, navigating, and warning. Meanwhile, our seas also echo with human-made sound, and we are only just learning how these pervasive noises can mask mating calls, chase animals from their food, and even wound creatures.Intimate and artful, Sing Like Fish tells a uniquely complete story of ocean animals' submerged sounds, envisions a quieter future, and offers a profound new understanding of the world below the surface.

This scarce antiquarian book is a facsimile reprint of the original. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions that are true to the original work.

Some of Nick Brandt's subjects are humans, some are animals, but they all are creatures of equal and obvious personhood. The overwhelming sense in the photographer's ongoing global series The Day May Break is that they are all figuring out how to live in a new world.  Both extreme droughts and floods have destroyed people's homes and livelihoods. Victims of habitat destruction and wildlife trafficking, the animals are rescues that can never be released to the wild. People and animals were photographed in the same frame and indeed convey a sense of connectedness through a shared fate. Fog is the unifying visual, symbolic of the natural world rapidly fading from view; and an echo of the smoke from wildfires, intensified by climate change, devastating so much of the planet. But in spite of their loss, these people and animals are survivors, pioneers entering the new phase our world has reached. In The Day May Break they share their powerful stories.   This set includes the volumes The Day May Break, The Day May Break - Chapter Two, and SINK / RISE, The Day May Break, Chapter three. NICK BRANDT (*1964, London) studied painting and film at St.Martin's School of Art, London. In 1992 he moved to California,where he still lives today. Since 2001, he has documented thedestructive impact that humankind is having on the naturalworld and, as a result, on humans themselves. Chapter One ofhis seminal series The Day May Break featured photographstaken in Zimbabwe and Kenya in late 2020. Chapter Two wasshot in Bolivia in 2022. In the third chapter Brandt introducescolor to the series, highlighting the all-encompassing impact ofthe water.

Drawing on the expertise of marine researchers from both the natural and social sciences, this book examines how we, as both scientists and societies, can return to a sustainable co-existence with the ocean and use the tools of transdisciplinarity to bring together the diverse forms of knowledge needed to achieve this important task.

Mangroves are considered the ¿wonder florä distributed in the tropics, subtropics, and warm temperate latitudes. Aside from protecting the coastal marine communities, mangroves also serve as a haven for aquatic and terrestrial fauna, actively participate in energy dynamics, recycle nutrients, filter waste, and support the livelihood of coastal communities. This makes the mangrove ecosystem crucial to the well-being of the planet. This book, written by experts, provides invaluable insights into mangroves of the Niger Delta, the relationship between mangrove recruitment and thrombolytic development, deforestation and sustainability, mangrove health assessment, ecosystem-based coastal protection, and conservation through ecotourism. This book on mangrove biology, ecosystem, and conservation is an invaluable resource for every mangrove enthusiast.

Carbon dioxide has great importance as a greenhouse gas in the atmosphere and as a carbonic acid system in water. Since the CO2 in the two spheres of air and water is connected by gas exchange, these spheres cannot be considered separately. The basics of the systems are covered, the role as a greenhouse gas, the carbon cycles, and the solution in water. The carbonic acid system in water and the importance of lime are presented in detail. The occurrence in the natural water cycle as well as in raw waters for drinking water treatment and the corresponding treatment processes for drinking water are also described.Sample calculations for the aqueous phase supplement the theoretical considerations. The required constants are attached in tables. Chemical fundamentals are presented in brief in conclusion.