Seasonal, multi-scale spatial and slope-oriented effects in cambial dynamics: an evaluation of sampling methods in Cedrela odorata (Meliaceae) in an Atlantic Forest area

Botany ◽  
2016 ◽  
Vol 94 (10) ◽  
pp. 993-999
Author(s):  
Maxmira de Souza Arêdes-dos-Reis ◽  
Monique Silva Costa ◽  
Cristiano Yuji Sasada-Sato ◽  
Cátia Henriques Callado
Keyword(s):  
Radial Growth ◽  
Sampling Methods ◽  
Growth Behavior ◽  
Cedrela Odorata ◽  
Multi Scale ◽  
Multiple Sampling ◽  
Different Seasons ◽  
Total Variability ◽  
Multiple Samples ◽  
Slope Orientation

Studies of cambial dynamics have been employed to investigate the growth behavior of trees. In these investigations, however, spatial variation in cambial rhythm within the stem is usually not taken into account. This study aims to evaluate the contribution of multiple sampling scales on the cambial dynamics of Cedrela odorata L. (Meliaceae) in different seasons. The effects of slope orientation were also tested. Samples were processed and analyzed with standard plant histology techniques. Data from multiple sampling scales were analyzed with nested ANOVA for each season, and the total variance was partitioned according to the fraction related to each scale. The main sources of variability were associated with the scale of tree and scales smaller than 1 cm. Radial growth was not significantly related to acclivity orientation. Thus, to obtain samples that represent total variability in cambial dynamics, it is preferable to increase the number of sampled trees; to take multiple samples from a few millimetres apart from each other, or to assess multiple histological sections. Samples on scales greater than a few centimetres apart should not be given priority.

scholarly journals Towards precision ecology: Relationships of multiple sampling methods quantifying abundance for comparisons among studies

2021 ◽  
Author(s):  
Benjamin D. Hoffmann ◽  
Magen Pettit
Keyword(s):  
Sampling Methods ◽  
Full Range ◽  
Transformation Method ◽  
Sampling Techniques ◽  
Pitfall Traps ◽  
Multiple Sampling ◽  
Sampling Protocols ◽  
Zero Values ◽  
Relative Utility ◽  
Ant Ecology

ABSTRACTBecause different sampling techniques will provide different abundance values, it is currently difficult to compare results among many studies to form holistic understandings of how abundance influences ant ecology. Using three sampling methods in the same location we found pitfall traps best confirmed A. gracilipes presence recording the fewest zero values (9.1%), card counts were the least reliable (67.1%), and tuna lures were intermediate (30.1%). The abundance of A. gracilipes from card counts ranged from 0 to 20, in pitfall traps from 0 to 325, and the full range of tuna lure abundance scores (0-7) were sampled. We then determined the relationships between these three standard ant sampling techniques for the abundance of yellow crazy ant Anoplolepis gracilipes. Irrespective of the data transformation method, the strongest relationship was between pitfall traps and tuna lures, and the least strong was between pitfall traps and card counts. We then demonstrate the utility of this knowledge by analysing A. gracilipes abundance reported within published literature to show where the populations in those studies sit on an abundance spectrum. We also comment on insights into the relative utility of the three methods we used to determine A. gracilipes abundance among populations of varying abundance. Pitfall traps was the most reliable method to determine if the species was present at the sample level. Tuna lures were predominantly reliable for quantifying the presence of workers, but were limited by the number of workers that can gather around a spoonful of tuna. Card counts were the quickest method, but were seemingly only useful when A. gracilipes abundance is not low. Finally we discuss how environmental and biological variation needs to be accounted for in future studies to better standardise sampling protocols to help progress ecology as a precision science.

scholarly journals Bees (Hymenoptera, Apoidea) in an Ecotonal Cerrado-Amazon Region in Brazil

Sociobiology ◽  
2019 ◽  
Vol 66 (3) ◽  
pp. 457
Author(s):  
Rony Peterson Santos Almeida ◽  
Filipe Viegas Arruda ◽  
Daniel Paiva Silva ◽  
Beatriz Woiski Teixeira Coelho
Keyword(s):  
Species Richness ◽  
Sampling Method ◽  
Sampling Methods ◽  
Amazon Region ◽  
The State ◽  
Species Specificity ◽  
Pitfall Traps ◽  
Different Seasons ◽  
Accumulation Curves ◽  
Pan Traps

Little is known about the distribution of organisms in transitional areas, overall because of the lack of understanding regarding each species’ specificity to the diversity of microhabitats found in these areas and effective ways to sample organisms in these regions. Therefore, in this study we aimed to inventory the bee species in a transitional Cerrado-Amazon area in the state of Pará, Brazil, evaluating the effects of three different sampling methods. We used six fragments, sampled in two different seasons with three sampling methods (arboreal pitfalls with urine, scent traps, and pan traps). The specimens were identified and we used accumulation curves to measure the effectiveness of each method. In total, we sampled 68 bee species, where 53 were exclusively from one single sampling method. The pitfall traps were those with reached the highest species richness among all three sampling methods analyzed, followed by the scent traps and pan traps, respectively. Despite the efficiency and generality of the bee groups we found, the pitfall method does not cover specific bee groups as the Euglossini bees, almost exclusively attracted to scent traps. Therefore, we suggest that studies using pitfalls with urine should be performed in other biomes to evaluate the efficiency of this method in future bee surveys.

scholarly journals Assessment of Airway Microbiota and Inflammation in Cystic Fibrosis Using Multiple Sampling Methods

2015 ◽  
Vol 12 (2) ◽  
pp. 221-229 ◽  
Author(s):  
Edith T. Zemanick ◽  
Brandie D. Wagner ◽  
Charles E. Robertson ◽  
Mark J. Stevens ◽  
Stanley J. Szefler ◽  
...  
Keyword(s):  
Cystic Fibrosis ◽  
Sampling Methods ◽  
Multiple Sampling

scholarly journals Occupancy and detectability modelling of vertebrates in northern Australia using multiple sampling methods

PLoS ONE ◽  
2018 ◽  
Vol 13 (9) ◽  
pp. e0203304 ◽  
Author(s):  
Luke D. Einoder ◽  
Darren M. Southwell ◽  
José J. Lahoz-Monfort ◽  
Graeme R. Gillespie ◽  
Alaric Fisher ◽  
...  
Keyword(s):  
Sampling Methods ◽  
Northern Australia ◽  
Multiple Sampling

Sample size and cardinal orientation in cambial activity analysis: a case study

IAWA Journal ◽  
2019 ◽  
Vol 40 (2) ◽  
pp. 183-190
Author(s):  
Maxmira de Souza Arêdes-dos-Reis ◽  
Monique Silva Costa ◽  
Gabriel Uriel Cruz Araújo dos Santos ◽  
Cátia Henriques Callado
Keyword(s):  
Radial Growth ◽  
Growth Dynamics ◽  
Woody Species ◽  
Cambial Activity ◽  
Tropical Species ◽  
Cedrela Odorata ◽  
Cambial Cell ◽  
Sampling Protocols ◽  
Cambial Zone

ABSTRACTRadial growth dynamics of woody species is studied by different methods. the annual monitoring of cambial activity has been recommended as the method of greatest accuracy in research and appropriate for studies in protected areas for biological conservation, because it is largely nondestructive. Nevertheless, sampling protocols still need more standardization and precision. this study aims to investigate the influence of cardinal orientation on the number of cells in the cambial zone, and to evaluate the number of trees needed to conduct histological studies of cambial activity in Cedrela odorata, a tropical species with well-defined annual growth in the Atlantic Forest of South America/Brazil. Seventeen trees were evaluated during the period of intense cambial activity, with the sampling of four quadrants of the stem, according to cardinal orientation. the variance of cambial cell numbers was calculated for different numbers of trees. the results showed that radial growth variance was not related to cardinal orientation, but that at least 12 trees should be sampled for robust data on cambial dynamics.

scholarly journals Radial Growth Behavior of Pines on Romanian Degraded Lands

Forests ◽  
2018 ◽  
Vol 9 (4) ◽  
pp. 213 ◽  
Author(s):  
Ciprian Silvestru-Grigore ◽  
Florin Dinulică ◽  
Gheorghe Spârchez ◽  
Aureliu Hălălișan ◽  
Lucian Dincă ◽  
...  
Keyword(s):  
Radial Growth ◽  
Growth Behavior ◽  
Degraded Lands

scholarly journals A comparative case study of walking environment in Madrid and Philadelphia using multiple sampling methods and street virtual audits

2020 ◽  
Vol 4 (3) ◽  
pp. 336-344 ◽  
Author(s):  
Pedro Gullón ◽  
Usama Bilal ◽  
Patricia Sánchez ◽  
Julia Díez ◽  
Gina S. Lovasi ◽  
...  
Keyword(s):  
Sampling Methods ◽  
Comparative Case Study ◽  
Multiple Sampling ◽  
Walking Environment
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