TY - JOUR A1 - Kindermann, Liana A1 - Dobler, Magnus A1 - Niedeggen, Daniela A1 - Linstädter, Anja T1 - A new protocol for estimation of woody aboveground biomass in disturbance-prone ecosystems JF - Ecological indicators : integrating monitoring, assessment and management N2 - Almost one third of global drylands are open forests and savannas, which are typically shaped by frequent natural disturbances such as wildfire and herbivory. Studies on ecosystem functions and services of woody vegetation require robust estimates of aboveground biomass (AGB). However, most methods have been developed for comparatively undisturbed forest ecosystems. As they are not tailored to accurately quantify AGB of small and irregular growth forms, their application on these growth forms may lead to unreliable or even biased AGB estimates in disturbance-prone dryland ecosystems. Moreover, these methods cannot quantify AGB losses caused by disturbance agents. Here we propose a methodology to estimate individual-and stand-level woody AGB in disturbance-prone ecosystems. It consists of flexible field sampling routines and estimation workflows for six growth classes, delineated by size and damage criteria. It also comprises a detailed damage assessment, harnessing the ecological archive of woody growth for past disturbances. Based on large inventories collected along steep gradients of elephant disturbances in African dryland ecosystems, we compared the AGB estimates generated with our proposed method against estimates from a less adapted forest inventory method. We evaluated the necessary stepwise procedures of method adaptation and analyzed each step's effect on stand-level AGB estimation. We further explored additional advantages of our proposed method with regard to disturbance impact quantification. Results indicate that a majority of growth forms and individuals in savanna vegetation could only be assessed if methods of AGB estimation were adapted to the conditions of a disturbance-prone ecosystem. Furthermore, our damage assessment demonstrated that one third to half of all woody AGB was lost to disturbances. Consequently, less adapted methods may be insufficient and are likely to render inaccurate AGB estimations. Our proposed method has the potential to accurately quantify woody AGB in disturbance-prone ecosystems, as well as AGB losses. Our method is more time consuming than conventional allometric approaches, yet it can cover sufficient areas within reasonable timespans, and can also be easily adapted to alternative sampling schemes. KW - Damage assessment KW - Disturbance impacts KW - Tree growth classes KW - Method KW - comparison KW - Flexible sampling strategy KW - Tree allometry KW - Woody KW - aboveground biomass Y1 - 2021 U6 - https://doi.org/10.1016/j.ecolind.2021.108466 SN - 1470-160X SN - 1872-7034 VL - 135 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Küttner, Uwe-Alexander T1 - Rhythmic analyses as a proof-procedure? BT - An initial observation on rhythmicity and projection JF - Prosodie und Phonetik in der Interaktion = Prosody and phonetics in interaction N2 - This paper reports a problematic case of unequivocally evidencing participant orientation to the projective force of some turn-initial demonstrative wh-clefts (DCs) within the framework of Conversation Analysis (CA) and Interactional Linguistics (IL). Conducting rhythmic analyses appears helpful in this regard, in that they disclose rhythmic regularities which suggest a speaker's orientation towards a projected turn continuation. In this particular case, rhythmic analyses can therefore be shown to meaningfully complement sequential analyses and analyses of turn-design, so as to gather additional evidence for participant orientations. In conclusion, I will point to possibly more extensive relations between rhythmicity and projection and proffer a tentative outlook for the usability of rhythmic analyses as an analytic tool in CA and IL. N2 - Dieser primär interaktional-linguistisch ausgerichtete Beitrag berichtet von einem Problemfall im Nachweis von Teilnehmerorientierung an den Turn-Fortführung projizierenden Eigenschaften einiger turn-initialer "Demonstrative-Cleft- Konstruktionen" (DCs). Es wird gezeigt, dass rhythmische Analysen diesbezüglich hilfreich sein können, da sie im konkreten Fall rhythmische Regularitäten erkennen lassen, die eine sprecherseitige Orientierung an einer projizierten Turn-Fortführung nahelegen. Vorausgegangene sequenzielle Analysen und Analysen von Turn-Design werden somit bedeutsam durch rhythmische Analysen ergänzt, um zusätzliche Evidenzen für Teilnehmerorientierungen zu erfassen. Abschließend werde ich auf potenziell weitreichendere Zusammenhänge zwischen Rhythmizität und Projektion in der Interaktion hinweisen und einen provisorischen Ausblick hinsichtlich der möglichen Verwendung rhythmischer Analysen als Analysewerkzeug in der Konversationsanalyse und der Interaktionalen Linguistik geben. KW - Interaktionale Linguistik KW - Sprechrhythmus und Rhythmische Analyse KW - Methode KW - Teilnehmerorientierung KW - Turnkonstruktionseinheiten KW - Projektion KW - Demonstrative Clefts KW - Interactional Linguistics KW - Speech Rhythm and Rhythmic Analysis KW - Method KW - Participant Orientation KW - Turn-Constructional Units KW - Projection KW - Demonstrative Clefts Y1 - 2014 UR - http://verlag-gespraechsforschung.de/2014/pdf/kuettner-audio.pdf SN - 978-3-936656-60-2 SP - 46 EP - 69 PB - Verlag für Gesprächsforschung CY - Mannheim ER -