Search results for " ecosystems"

Remote Sensing for Agriculture, Ecosystems, and Hydrology XI

2009

"Front Matter: Volume 9637", Proc. SPIE 9637, Remote Sensing for Agriculture, Ecosystems, and Hydrology XVI

2015

This proceedings volume includes papers presented during the conference on Remote Sensing for Agriculture, Ecosystems, and Hydrology. The conference was part of the International Symposium on Remote Sensing sponsored by SPIE. The symposium was held at the Centre de Congrès Pierre Baudis, Toulouse, France, 21- 24 September 2015. The conference is dedicated to providing rapid dissemination of scientific and technical information, and attracts scientists and professionals from throughout Europe, Africa, Asia, and the Americas. Approximately 34 oral and 25 poster presentations were given this year, covering a broad range of topics in the field of remote sensing applications in environmental sci…

Introduction

2013

This proceedings volume contains papers presented during the conference on Remote Sensing for Agriculture, Ecosystems, and Hydrology XV. The conference was part of the 20th International Symposium on Remote Sensing sponsored by SPIE—The International Society for Optical Engineering. The symposium was held at the Internationales Congress Center, Dresden, Germany, from 23rd to 26th of September 2013. The conference is dedicated to providing rapid dissemination of scientific and technical information, and attracted scientists and professionals from throughout Europe, Africa, Asia, and the Americas. Approximately 40 oral and 20 poster presentations were given, covering a broad range of topics i…

Remote Sensing for Agriculture, Ecosystems, and Hydrology XIV

2012

Introduction - This proceedings volume contains papers presented during the conference on Remote Sensing for Agriculture, Ecosystems, and Hydrology XIV. The conference was part of the 19th International Symposium on Remote Sensing sponsored by SPIE - The International Society for Optical Engineering. The symposium was held at the Edinburgh International Conference Centre, Edinburgh, United Kingdom, from 24th to 26th of September 2012. The conference is dedicated to providing rapid dissemination of scientific and technical information, and attracted scientists and professionals from throughout Europe, Africa, Asia, and the Americas. More than 30 oral and 30 poster presentations were given, c…

Does diversification pay in the app market? Evidence from Apple's App Store and Google Play

2016

In this paper we address the study of the effects of product line diversification on firm performance in the mobile application market. Specifically, we shed light on whether the distribution platform ecosystem where developers commercialize their apps influence the effect of product line diversification, i.e., diversification across different app categories, on developer sales performance. To these purposes, we compare the sales performance of diversified developers with that of category-specialized developers in the two major app stores (namely, Apple’s App Store and Google Play). Our results show that the diversification strategy has a positive impact on developer sales in Google Play, w…

Tracing the anthropocene back and forward: Rights for ecosystem services, local communities, and REDD

2020

The author of the book When Rights Embrace Responsibilities. Biocultural Rights and Conservation of the Environment replies to the comments raised by Francesco Viola and Gianfrancesco Zanetti in the present journal issue. She also dwells on some topics of her book which deserve further clarification and speculates on possible future developments of biocultural rights.

Evolutionary processes in the emergence and recent spread of the syphilis agent, Treponema pallidum

2022

Abstract The incidence of syphilis has risen worldwide in the last decade in spite of being an easily treated infection. The causative agent of this sexually transmitted disease is the bacterium Treponema pallidum subspecies pallidum (TPA), very closely related to subsp. pertenue (TPE) and endemicum (TEN), responsible for the human treponematoses yaws and bejel, respectively. Although much focus has been placed on the question of the spatial and temporary origins of TPA, the processes driving the evolution and epidemiological spread of TPA since its divergence from TPE and TEN are not well understood. Here, we investigate the effects of recombination and selection as forces of genetic diver…

Spatio-temporal behaviour of the deep chlorophyll maximum in Mediterranean Sea: Development of a stochastic model for picophytoplankton dynamics

2013

In this paper, by using a stochastic reaction-diffusion-taxis model, we analyze the picophytoplankton dynamics in the basin of the Mediterranean Sea, characterized by poorly mixed waters. The model includes intraspecific competition of picophytoplankton for light and nutrients. The multiplicative noise sources present in the model account for random fluctuations of environmental variables. Phytoplankton distributions obtained from the model show a good agreement with experimental data sampled in two different sites of the Sicily Channel. The results could be extended to analyze data collected in different sites of the Mediterranean Sea and to devise predictive models for phytoplankton dynam…

Value Creation and Power Asymmetries in Digital Ecosystems : A Study of a Cloud Gaming Provider

2020

Digital platforms connecting users and service providers have a central role in determining the value creation structure of ecosystems. Platform developers try to achieve a dominant position for the platform with a strong ecosystem around it. The size and attractiveness of the services can attract new users, and growing user volume can bring new co-operative service providers to the service partner network. An interesting question is how the presence of power and potential power asymmetry affect the value creation capability and the structure of a network around a platform? This chapter describes an example of value creation and the influence of power asymmetry in a digital ecosystem built …

Monitoring agricultural ecosystems

2023

The world’s population is predicted to reach nearly 10 billion by 2050, and at the same time, economic growth and improving living standards in developing countries are driving up food consumption. To accommodate these increasing demands for food, the agricultural sector will need to produce at least 50% more food by 2050. The increasing food production will need to be accomplished not only on degrading soils, with depleting freshwater resources and while experiencing climate change but also sustainably to ensure long-term food and water security. With little existing space to expand current agricultural extents, the increased food production needs to be realized within existing farms throu…