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Nantongo JS, Potts BM, Davies NW, Aurik D, Elms S, Fitzgerald H, O'Reilly-Wapstra JM. Chemical Traits that Predict Susceptibility of Pinus radiata to Marsupial Bark Stripping. J Chem Ecol 2021; 48:51-70. [PMID: 34611747 DOI: 10.1007/s10886-021-01307-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 08/11/2021] [Accepted: 08/18/2021] [Indexed: 11/30/2022]
Abstract
Bark stripping by mammals is a major problem in managed conifer forests worldwide. In Australia, bark stripping in the exotic plantations of Pinus radiata is mainly caused by native marsupials and results in reduced survival, growth, and in extreme cases death of trees. Herbivory is influenced by a balance between primary metabolites that are sources of nutrition and secondary metabolites that act as defences. Identifying the compounds that influence herbivory may be a useful tool in the management of forest systems. This study aimed to detect and identify both constitutive and induced compounds that are associated with genetic differences in susceptibility of two-year-old P. radiata trees to bark stripping by marsupials. An untargeted profiling of 83 primary and secondary compounds of the needles and bark samples from 21 susceptible and 21 resistant families was undertaken. These were among the most and least damaged families, respectively, screened in a trial of 74 families that were exposed to natural field bark stripping by marsupials. Experimental plants were in the same field trial but protected from bark stripping and a subset were subjected to artificial bark stripping to examine induced and constitutive chemistry differences between resistant and susceptible families. Machine learning (random forest), partial least squares plus discriminant analysis (PLS-DA), and principal components analysis with discriminant analysis (PCA-DA), as well as univariate methods were used to identify the most important totals by compound group and individual compounds differentiating the resistant and susceptible families. In the bark, the constitutive amount of two sesquiterpenoids - bicyclogermacrene and an unknown sesquiterpenoid alcohol -were shown to be of higher levels in the resistant families, whereas the constitutive sugars, fructose, and glucose, as well individual phenolics, were higher in the more susceptible families. The chemistry of the needles was not useful in differentiating the resistant and susceptible families to marsupial bark stripping. After artificial bark stripping, the terpenes, sugars, and phenolics responded in both the resistant and susceptible families by increasing or reducing amounts, which leveled the differences in the amounts of the compounds between the different resistant and susceptible classes observed at the constitutive level. Overall, based on the families with extreme values for less and more susceptibility, differences in the amounts of secondary compounds were subtle and susceptibility due to sugars may outweigh defence as the cause of the genetic variation in bark stripping observed in this non-native tree herbivory system.
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Affiliation(s)
- Judith S Nantongo
- School of Natural Sciences, University of Tasmania, Private Bag 55, Hobart, TAS, 7001, Australia.
| | - Brad M Potts
- School of Natural Sciences, University of Tasmania, Private Bag 55, Hobart, TAS, 7001, Australia.,ARC Training Centre for Forest Value, University of Tasmania, TAS, Hobart, 7001, Australia
| | - Noel W Davies
- Central Science Laboratory, University of Tasmania, Private Bag 74, Hobart, TAS, 7001, Australia
| | - Don Aurik
- Timberlands Pacific Pty Ltd, Launceston, 7250, Australia
| | - Stephen Elms
- Hancock Victorian Plantations, Churchill, 3842, Australia
| | - Hugh Fitzgerald
- School of Natural Sciences, University of Tasmania, Private Bag 55, Hobart, TAS, 7001, Australia
| | - Julianne M O'Reilly-Wapstra
- School of Natural Sciences, University of Tasmania, Private Bag 55, Hobart, TAS, 7001, Australia.,ARC Training Centre for Forest Value, University of Tasmania, TAS, Hobart, 7001, Australia
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Carpio Camargo AJ, Barasona J, Acevedo P, Fierro Y, Gortazar C, Vigal C, Moreno Á, Vicente J. Assessing red deer hunting management in the Iberian Peninsula: the importance of longitudinal studies. PeerJ 2021; 9:e10872. [PMID: 33604198 PMCID: PMC7869667 DOI: 10.7717/peerj.10872] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 01/10/2021] [Indexed: 11/20/2022] Open
Abstract
Understanding the dynamics of a wildlife population in relation to hunting strategies is essential to achieve sustainable management. We used monitoring data over 25 years from two red deer (Cervus elaphus) populations with different management (with and without supplemental feeding) in South Central Spain to: (i) characterise the density dependence of population dynamics under contrasted management, and (ii) provide the basis for sustainable extraction by considering the theoretical maximum sustainable yield (MSYt) as the reference. The red deer population displayed a typical management reactive culling approach ('saw-tooth-like' curves), with occasional strong annual harvests but not occurring on a regular basis. Interestingly, we found reduced population growth at high densities in both populations, indicating that density-mediated factors determined population growth even when artificial feeding was provided. However, no effects of sex not age class of the extracted population on the population growth rate were determined. The total number of animals hunted was only slightly above those predicted by MSYt (i.e. K 50%) in both populations, despite high densities close to theoretical K, being consistent throughout the study period. The extraction rates (30.3 and 34.0%, for supplemented and unsupplemented populations, respectively) were 13.3% and 10.2% lower compared to the MSYt situation in the unsupplemented and supplemented populations, respectively. Long term population monitoring data provided feasible and suitable baseline values to optimise the sustainable exploitation of red deer populations in the Mediterranean ecosystem under these contrasting management scenarios. Adaptive management, involving objective-driven decision making informed by data on red deer population dynamic, can contribute (i) to maximising the total extraction over the long term while (ii) reducing the ecological impact of high population densities.
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Affiliation(s)
- Antonio José Carpio Camargo
- Department of Zoology, University of Córdoba, Córdoba, Spain.,SaBio, Instituto de Investigación en Recursos Cinegéticos, IREC (CSIC-UCLM-JCCM), Ciudad Real, Spain
| | - Jose Barasona
- VISAVET Health Surveillance Centre, Department of Animal Health, Veterinary School, Complutense University of Madrid, Madrid, Spain
| | - Pelayo Acevedo
- SaBio, Instituto de Investigación en Recursos Cinegéticos, IREC (CSIC-UCLM-JCCM), Ciudad Real, Spain
| | | | - Christian Gortazar
- SaBio, Instituto de Investigación en Recursos Cinegéticos, IREC (CSIC-UCLM-JCCM), Ciudad Real, Spain
| | - Carlos Vigal
- Los Quintos de Mora, Organismo Autónomo de Parques Nacionales, Toledo, Spain
| | - Ángel Moreno
- Los Quintos de Mora, Organismo Autónomo de Parques Nacionales, Toledo, Spain
| | - Joaquin Vicente
- SaBio, Instituto de Investigación en Recursos Cinegéticos, IREC (CSIC-UCLM-JCCM), Ciudad Real, Spain
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Bobrowski M, Gillich B, Stolter C. Nothing else matters? Food as a driving factor of habitat use by red and roe deer in winter? WILDLIFE BIOLOGY 2020. [DOI: 10.2981/wlb.00723] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
| | | | - Caroline Stolter
- C. Stolter (https://orcid.org/0000-0003-4059-9786), Dept of Animal Ecology and Conservation, Univ. of Hamburg, Martin-Luther-King Platz 3, DE-20146 Hamburg, Germany. MB also at: Center for Earth System Research and Sustainability, Inst. of Geography,
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Bark Stripping by Deer Was More Intensive on New Recruits than on Advanced Regenerants in a Subalpine Forest. FORESTS 2020. [DOI: 10.3390/f11050490] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Research Highlights: To ensure sustainable forest regeneration, it is important to clarify whether new recruits or advanced regenerants are more likely to be stripped. Therefore, the effects of bark stripping on saplings in subalpine forests with abundant saplings should be analyzed by regeneration mode, but there have been no such studies until now. Background and Objectives: I investigated the effects of bark stripping by Cervus nippon on saplings in a subalpine coniferous forest in central Japan to (1) reveal differences in bark stripping between new recruits and advanced regenerants and (2) clarify the factors affecting survivorship. Materials and Methods: A 50 m × 140 m (0.7 ha) plot was set in the old-growth subalpine coniferous forest. All trees in the plot that were ≥2 m in height were tagged, identified to species, measured diameter at breast height and recorded bark stripping by deer. These trees and new recruits were counted and measured in 2005, 2007, 2012, and 2017. I compared saplings recruited in 2007, 2012, and 2017 (“new recruits”) with existing saplings of the same size (“advanced regenerants”). Results: The density of new recruits of Abies mariesii and Tsuga diversifolia increased, whereas that of Abies veitchii decreased. The proportion of stripped saplings was greater in new recruits than in advanced regenerants, significantly so in A. veitchii, which also had the highest maximum bark stripping ratio. Factors affecting the survivorships applied by the regression tree analysis were the maximum stripping ratio of stems for the two Abies species and the initial size for the T. diversifolia. Conclusions: Bark stripping by deer was more intensive on new recruits than on advanced regenerants in a subalpine forest, and regeneration in canopy gaps might fail because of intensive bark stripping in areas overabundant in deer.
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Kurek T, Todys J, Pazdrowski W, Szymański M, Łukowski A. Intensity of Stripping and Sugar Content in the Bark and the Bast of European Beech ( Fagus Sylvatica). Open Life Sci 2019; 14:19-28. [PMID: 33817133 PMCID: PMC7874787 DOI: 10.1515/biol-2019-0003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 01/11/2019] [Indexed: 11/15/2022] Open
Abstract
The choice of particular trees for stripping by deer is puzzling because a preference is observed for trees of the highest social class. Trees ranked highest in the stand can produce more carbohydrates as a product of carbon assimilation. Among the many important nutrient and defense groups of metabolites in plants, high sugar content is postulated to be an attractant due to its impact on the sense of taste of different herbivores. Thus, we hypothesize that the carbohydrate content in the bast of the European beech is the most important factor by which deer make their choice. Our aim was to assess whether the sugar content in the bark and in the bast can be a factor which influences the intensity of bark stripping of particular trees in a beech thicket by red deer. A single episode connected with tree damaging pertained to 7% of the trees on the analyzed sampling plots. In total, 27% of the trees were damaged, including old damages. The mean size of damage to a given tree equaled 36% of the tree's circumference and 0.06 m2 of the trunk's surface. Analysis of the sugar content in the bast and in the bark jointly indicates that the trees subjected to bark stripping possessed a distinctly higher sugar content than the trees which were not damaged. The probability of bark stripping grows together with an increase in the sugar content of the bark and of the bast.
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Affiliation(s)
- Tomasz Kurek
- Polanów Forest Division, 12a Żwirowa Street, 76-010Polanów, Poland
- E-mail:
| | - Jacek Todys
- Polanów Forest Division, 12a Żwirowa Street, 76-010Polanów, Poland
| | - Witold Pazdrowski
- University of Life Sciences in Poznań, Forest Utilization Department, PoznańPoland
| | - Marek Szymański
- University of Life Sciences in Poznań, Forest Utilization Department, PoznańPoland
| | - Adrian Łukowski
- University of Life Sciences in Poznań, Department of Silviculture, PoznańPoland ,Institute of Dendrology PAS, Laboratory of Ecology
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Valdés-Correcher E, Rodriguez E, Kemp YJM, Wassen MJ, Cromsigt JPGM. Comparing the impact of a grazing regime with European bison versus one with free-ranging cattle on coastal dune vegetation in the Netherlands. MAMMAL RES 2018. [DOI: 10.1007/s13364-018-0373-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Machado RAR, McClure M, Hervé MR, Baldwin IT, Erb M. Benefits of jasmonate-dependent defenses against vertebrate herbivores in nature. eLife 2016; 5:e13720. [PMID: 27352734 PMCID: PMC4927296 DOI: 10.7554/elife.13720] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 05/10/2016] [Indexed: 12/23/2022] Open
Abstract
Endogenous jasmonates are important regulators of plant defenses. If and how they enable plants to maintain their reproductive output when facing community-level herbivory under natural conditions, however, remains unknown. We demonstrate that jasmonate-deficient Nicotiana attenuata plants suffer more damage by arthropod and vertebrate herbivores than jasmonate-producing plants in nature. However, only damage by vertebrate herbivores translates into a significant reduction in flower production. Vertebrate stem peeling has the strongest negative impact on plant flower production. Stems are defended by jasmonate-dependent nicotine, and the native cottontail rabbit Sylvilagus nuttallii avoids jasmonate-producing N. attenuata shoots because of their high levels of nicotine. Thus, endogenous jasmonates enable plants to resist different types of herbivores in nature, and jasmonate-dependent defenses are important for plants to maintain their reproductive potential when facing vertebrate herbivory. Ecological and evolutionary models on plant defense signaling should aim at integrating arthropod and vertebrate herbivory at the community level.
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Affiliation(s)
- Ricardo AR Machado
- Root-Herbivore Interactions Group, Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Jena, Germany
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
- Department of Molecular Ecology, Max-Planck Institute for Chemical Ecology, Jena, Germany
| | - Mark McClure
- School of the Environment, Washington State University, Washington, United States
| | - Maxime R Hervé
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
- Institut de Génétique, Environment et Protection des Plantes, Le Rheu, France
| | - Ian T Baldwin
- Department of Molecular Ecology, Max-Planck Institute for Chemical Ecology, Jena, Germany
| | - Matthias Erb
- Root-Herbivore Interactions Group, Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Jena, Germany
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
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Thompson CL, Valença-Montenegro MM, Melo LCDO, Valle YBM, Oliveira MABD, Lucas PW, Vinyard CJ. Accessing foods can exert multiple distinct, and potentially competing, selective pressures on feeding in common marmoset monkeys. J Zool (1987) 2014. [DOI: 10.1111/jzo.12164] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- C. L. Thompson
- Department of Biomedical Sciences; Grand Valley State University; Allendale MI USA
| | - M. M. Valença-Montenegro
- Centro Nacional de Pesquisa e Conservação de Primatas Brasileiros; Instituto Chico Mendes de Conservação da Biodiversidade; João Pessoa Brazil
| | | | - Y. B. M. Valle
- Laboratório de Ecofisiologia e Comportamento Animal; Departamento de Morfologia e Fisiologia Animal; Universidade Federal Rural de Pernambuco; Recife Brazil
| | - M. A. B. d. Oliveira
- Laboratório de Ecofisiologia e Comportamento Animal; Departamento de Morfologia e Fisiologia Animal; Universidade Federal Rural de Pernambuco; Recife Brazil
| | - P. W. Lucas
- Bioclinical Sciences; Kuwait University; Kuwait City Kuwait
| | - C. J. Vinyard
- Department of Anatomy and Neurobiology; Northeast Ohio Medical University; Rootstown OH USA
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