Overlooked branch turnover creates a widespread bias in forest carbon accounting

Proceedings of the National Academy of Sciences · 2024 · 9 citations

• Environmental science
• Forestry
• Ecology

globally), of similar magnitude to the observed global forest carbon sinks. In addition, reallocating carbon to branch turnover in model simulations reduced stem wood biomass, a long-lasting carbon storage, by 7 to 17%. This prevailing neglect of branch turnover suggests widespread biases in carbon flux estimates across global datasets and model simulations. Branch litterfall, sometimes used as a proxy for branch turnover, ignores carbon lost from attached dead branches, underestimating branch C turnover by 38% in a pine forest. Modifications to field measurement protocols and existing models are needed to allow a more realistic partitioning of wood production and forest carbon storage.

How tree species, tree size, and topographical location influenced tree transpiration in northern boreal forests during the historic 2018 drought

Global Change Biology · 2021 · 56 citations

• Environmental science
• Ecology
• Forestry

returned to pre-drought conditions relatively quickly. This study highlights unique species-specific responses to drought, which are additionally driven by a codependent interaction among tree size, relative topographic position, and unique regional climate conditions.

The response of coarse root biomass to long‐term CO₂ enrichment and nitrogen application in a maturing <i>Pinus taeda</i> stand with a large broadleaved component

Global Change Biology · 2021 · 16 citations

• Animal science
• Botany
• Agronomy

concentration over a range of soil N availability.

Global transpiration data from sap flow measurements: the SAPFLUXNET database

Earth system science data · 2021 · 180 citations

• Computer Science
• Environmental science
• Database

Abstract. Plant transpiration links physiological responses of vegetation to water supply and demand with hydrological, energy, and carbon budgets at the land–atmosphere interface. However, despite being the main land evaporative flux at the global scale, transpiration and its response to environmental drivers are currently not well constrained by observations. Here we introduce the first global compilation of whole-plant transpiration data from sap flow measurements (SAPFLUXNET, https://sapfluxnet.creaf.cat/, last access: 8 June 2021). We harmonized and quality-controlled individual datasets supplied by contributors worldwide in a semi-automatic data workflow implemented in the R programming language. Datasets include sub-daily time series of sap flow and hydrometeorological drivers for one or more growing seasons, as well as metadata on the stand characteristics, plant attributes, and technical details of the measurements. SAPFLUXNET contains 202 globally distributed datasets with sap flow time series for 2714 plants, mostly trees, of 174 species. SAPFLUXNET has a broad bioclimatic coverage, with woodland/shrubland and temperate forest biomes especially well represented (80 % of the datasets). The measurements cover a wide variety of stand structural characteristics and plant sizes. The datasets encompass the period between 1995 and 2018, with 50 % of the datasets being at least 3 years long. Accompanying radiation and vapour pressure deficit data are available for most of the datasets, while on-site soil water content is available for 56 % of the datasets. Many datasets contain data for species that make up 90 % or more of the total stand basal area, allowing the estimation of stand transpiration in diverse ecological settings. SAPFLUXNET adds to existing plant trait datasets, ecosystem flux networks, and remote sensing products to help increase our understanding of plant water use, plant responses to drought, and ecohydrological processes. SAPFLUXNET version 0.1.5 is freely available from the Zenodo repository (https://doi.org/10.5281/zenodo.3971689; Poyatos et al., 2020a). The “sapfluxnetr” R package – designed to access, visualize, and process SAPFLUXNET data – is available from CRAN.

Issue Information

Ecological Applications · 2017-01-01

Canadian Journal of Forest Research: Table of Contents

The Forestry Chronicle · 2001-04-01

Announcement: 6^th International Symposium on Metal Ions in Biology and Medicine

Metal-Based Drugs · 1999-01-01

The 6 tt' International Symposium on Metal Ions in Biology and Medicine (6 th ISMIBM) will be held on the "Island of Enchantment,"Puerto Rico, and its beautiful city of San Juan. This marks the beginning of a new era for our Symposium series, as we th th celebrate the 10 anniversary since the first Symposium in Reims, France. The 6 ISMIBM will be our first International Symposium in the 21 st Century. Therefore, it has particular significance for the scientists coming from all corners of the world. This Symposium will celebrate advances made in understanding the roles of metal ions and trace elements in biology and medicine. The Symposium organizers have assembled an internatio_nal group of speakers to conduct short courses, plenary sessions, concurrent sessions and poster presentations. Attention will be directed to all metal ions and trace elements with special focus on the health effects of arsenic. We invite you to join us to hear about these new advances in metal ions research as they apply to analysis, environmental assessment, toxicology, biology, and health. To round out the program we want you to share the unique insight gained from your innovative research.

Announcement: 6^th Iternational Symposium on Metal Ions in Biology and Medicine

Metal-Based Drugs · 1999-01-01

The 6 th International Symposium on Metal Ions in Biology and Medicine will be held in San Juan, Puerto Rico, USA. The objective of this symposium is to foster exchange of opinions between professionals and specialists working on analysis, research and applications of metals, trace elements and minerals in biological, biochemical, medical sciences, and environmental health. The scientific program, composed of plenary and concurrent sessions, poster presentations, and panel discussions, is designed to promote intensive and productive dialogue among experts in these fields. Short courses have been also organized, featuring specialized areas including toxicology, analysis, and environmental health research. The organizers of this symposium welcome you, and hope that you will enjoy the scientific and social programs.

Übersicht

LaboratoriumsMedizin · 1998-01-01

Zusammenfassung: In den letzten Jahren wurde zunehmend erkannt, da Aussagen ber Bioverfgbarkeit, Essentialitt und Toxizitt von Spurenelementen eine Spezies-Analytik erfordern, d. h. die Identifizierung und Quantifizierung der Bindungsformen und Valenzzustnde der Elemente in den zu untersuchenden Proben. Da diese Molekl-und Speziesinformationen bei der Untersuchung erhalten bleiben mssen, ergeben sich gegenber der einfachen Elementanalytik vollkommen neue Anforderungen hinsichtlich Probennahme und -lagerung sowie der angewendeten Meverfahren. Grundlage der Spezies-Analytik ist meistens die Kopplung eines mglichst speziesspezifischen Trennverfahrens mit einem spezifischen Nachweisverfahren fr das interessierende Spurenelement. In der vorliegenden bersicht werden die heute fr verschiedene Analytgruppen