Phenology of Ecosystem Processes - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Phenology of Ecosystem Processes write by Asko Noormets. This book was released on 2009-06-19. Phenology of Ecosystem Processes available in PDF, EPUB and Kindle. Terrestrial carbon balance is uncertain at the regional and global scale. A significant source of variability in mid-latitude ecosystems is related to the timing and duration of phenological phases. Spring phenology, in particular, has disproportionate effects on the annual carbon balance. However, the traditional phenological indices that are based on leaf-out and flowering times of select indicator species are not universally amenable for predicting the temporal dynamics of ecosystem carbon and water exchange. Phenology of Ecosystem Processes evaluates current applications of traditional phenology in carbon and H2O cycle research, as well as the potential to identify phenological signals in ecosystem processes themselves. The book summarizes recent progress in the understanding of the seasonal dynamics of ecosystem carbon and H2O fluxes, the novel use of various methods (stable isotopes, time-series, forward and inverse modeling), and the implications for remote sensing and global carbon cycle modeling. Each chapter includes a literature review, in order to present the state-of-the-science in the field and enhance the book’s usability as an educational aid, as well as a case study to exemplify the use and applicability of various methods. Chapters that apply a specific methodology summarize the successes and challenges of particular methods for quantifying the seasonal changes in ecosystem carbon, water and energy fluxes. The book will benefit global change researchers, modelers, and advanced students.
The Effects of Climate Change on the Phenology of Plants and Insects of Massachusetts
The Effects of Climate Change on the Phenology of Plants and Insects of Massachusetts - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook The Effects of Climate Change on the Phenology of Plants and Insects of Massachusetts write by Caroline A. Polgar. This book was released on 2013. The Effects of Climate Change on the Phenology of Plants and Insects of Massachusetts available in PDF, EPUB and Kindle. Abstract: Phenology, the timing of biological events, is a common metric used to measure the effect of climate change on ecosystems. Leaf out timing is a particularly important indicator because it is highly sensitive to temperature, represents a critical transition point of annual seasonality, and is an important driver of ecosystem processes. The mechanisms behind this have recently gained attention, and I wrote a literature review on the topic that surveyed what is known and identified topics that require further investigation (Chapter 1). In the next chapter, I focused on specific aspects of leaf out phenology using observation and experimentation. To examine the effects of climate change on leafing, I utilized historical records (1852-1860) and made observations (2009-2012) of leaf out in Concord, Massachusetts (Chapter 2). Leafing is now an average of 19 days earlier than in the past. Recently published studies suggest that the continued advance of leaf out is uncertain; with continued warming, unmet chilling requirements may lead to delays in leafing. To address this, I experimentally investigated chilling requirements of local species (Chapter 2). I compared the sensitivity of leaf out to spring temperature as measured by field observations, remotely sensed data, and experimental warming to determine differences resulting from these methods (Chapter 3). Earlier leaf out with warmer temperatures was found with all methods; however, leafing was more than twice as sensitive to temperature in the field study as under experimental warming, with remote sensing intermediate.To better understand the effects of climate change on ecosystems, we must obtain reliable information about multiple trophic levels. I examined the effects of temperature on the flight dates of ten species of Massachusetts butterflies (1895-2009) using both museum specimen records and citizen science data: the response of these species is similar to that of flowering and bee flight times and significantly greater than changes in bird arrival (Chapter 4). As long as investigators are aware of the limitations of each data source, historical data, remote sensing, experiments, and citizen science data are all effective tools for studying the effect of climate change on phenology.
Phenology: An Integrative Environmental Science
Phenology: An Integrative Environmental Science - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Phenology: An Integrative Environmental Science write by Mark D. Schwartz. This book was released on 2011-04-28. Phenology: An Integrative Environmental Science available in PDF, EPUB and Kindle. Phenology is the study of plant and animal life cycle events, which are triggered by environmental changes, especially temperature. Wide ranges of phenomena are included, from first openings of leaf and flower buds, to insect hatchings and return of birds. Each one gives a ready measure of the environment as viewed by the associated organism. Thus, phenological events are ideal indicators of the impact of local and global changes in weather and climate on the earth's biosphere. Assessing our changing world is a complex task that requires close cooperation from experts in biology, climatology, ecology, geography, oceanography, remote sensing and other areas. This book is a synthesis of current phenological knowledge, designed as a primer on the field for global change and general scientists, students and interested members of the public. With contributions from a diverse group of over fifty phenological experts, covering data collection, current research, methods and applications, it demonstrates the accomplishments and potential of phenology as an integrative environmental science.
Quantitative Analysis of Ecological Networks
Quantitative Analysis of Ecological Networks - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Quantitative Analysis of Ecological Networks write by Mark R. T. Dale. This book was released on 2021-04-15. Quantitative Analysis of Ecological Networks available in PDF, EPUB and Kindle. Network thinking and network analysis are rapidly expanding features of ecological research. Network analysis of ecological systems include representations and modelling of the interactions in an ecosystem, in which species or factors are joined by pairwise connections. This book provides an overview of ecological network analysis including generating processes, the relationship between structure and dynamic function, and statistics and models for these networks. Starting with a general introduction to the composition of networks and their characteristics, it includes details on such topics as measures of network complexity, applications of spectral graph theory, how best to include indirect species interactions, and multilayer, multiplex and multilevel networks. Graduate students and researchers who want to develop and understand ecological networks in their research will find this volume inspiring and helpful. Detailed guidance to those already working in network ecology but looking for advice is also included.
Phenology and Seasonality Modeling
Phenology and Seasonality Modeling - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Phenology and Seasonality Modeling write by H. Lieth. This book was released on 2013-03-09. Phenology and Seasonality Modeling available in PDF, EPUB and Kindle. The pulse of life with the seasons is a classic theme of biology, equally cap turing every man's curiosity about early and late milestones of every year's cycle and the critical physiologist's inquiry into life's subtle signals and responses. Natural historians of ancient and renaissance time as well as today have charted the commonsense facts behind inspired traditions of poetry and practical rules for growing food and fiber. This volume brings together several ways of organizing the basic principles of phenology. These find order in the otherwise overwhelming mass of detail that captures our fleeting attention, like the daily newspaper, and then tends to fade into the overstuffed archives of history. Is this order so obvious and understandable that there is no longer any scien tific challenge to "phenology" as a tradition? Or does apparent simplicity mask a complex and ultimately baffling obstacle to the understanding of seasonality in even those few indicator plants and animals we know best, not to men tion the less known species or races making up the rest of each major land scape unit or ecosystem? Denying both these hasty opinions, we think that this volume well illustrates a range of questions and answers-from soundly established (but not trivial) doctrine to exciting inquiry about how ecosystems are organized.
