Tree-ring climate response of Jeffrey pine in the Cascade Creek Watershed, Northern California

Bista, Raju; Mohr, M. D.; Saldaña, David Villena; Angulo, Gabriel; Chhetri, Parveen K.

doi:10.17221/191/2020-jfs

Cited by 2 publications

(2 citation statements)

References 46 publications

(91 reference statements)

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“…When investigating the resistance of Scots pine to climatic stress, as well as the reaction to increment in the pine regions of the Czech Republic, the following results of the impact of climate change on stands were obtained: a considerable negative impact of droughts on radial increment over a 30-year period was confirmed, while a positive impact was observed in spring temperatures in February and March, which were higher than normal [7]. Understanding the response of forests to current changes in climate factors is crucial for the implementation of forest management strategies, especially under conditions of expected negative, and even critical climate change [8]. The issue of forest adaptation, as well as its use as an effective means of mitigating global climate change, draws the attention of the scientific community to the key role of forests as one of the most accessible tools for stabilizing the climate and preserving the ecological balance on the planet [9].…”

Section: Introductionmentioning

confidence: 93%

Analysis of climate changes in the forest fund lands of Boyarka Forest Research Station

Romanenko¹,

Kovalevskii²

2022

Ukr. j. for. wood sci.

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The relevance of the study is conditioned upon the predicted changes in the area, as well as the significant narrowing of the zone of optimal growth of Scots pine. These forecasts are based on obtaining data on the ongoing climate changes. A constant decrease in precipitation, along with a gradual increase in temperature levels, will lead to consequences such as uncontrolled changes in ecosystems. Such a substantial change in abiotic factors caused by human activity plays a key role in the formation of forest coenoses. The main purpose of this study was to analyse the change in the average annual temperature, as well as the monthly amount of precipitation observed in the forest communities in the Separated Subdivision of the National University of Life and Environmental Sciences of Ukraine “Boyarka Forest Research Station”. The analysis is performed over decades to obtain data on the level of temperature change in relation to the previous period. This also includes a comparison of monthly precipitation for 2021 relative to 1991-2020, which is set as normal. To obtain indicators of the average annual temperature, the average value method is used, followed by calculating the value of the average annual temperature for each decade. To find the deviation in total precipitation, the method of estimating the moisture conditions according to total precipitation is used. Therewith, the value of a substantial deviation is taken at 20% relative to the precipitation rate. According to the study results, it was established that in 2001-2010 the average annual temperature changed by 0.83°C relative to the previous decade, and in 2011-2020 by 0.74°C relative to the previous period. Such dynamics indicate a gradual increase in the average annual temperature, which is reflected in the forecasts of the world community. During the estimation of moisture conditions, separate months of 2021 with a critical level of precipitation in relation to the normal period were selected. In March, the amount of precipitation was 43% of normal, in June – 32%, in September – 40%, and in October – only 4.3% of normal. The value in November was observed at 63% of the norm. Such a decrease in the amount of precipitation in relation to a gradual increase in the average annual temperature poses a threat of a decrease in the hydrological level of moisture. This leads to a decrease in the radial increment of tree stands, and a gradual shift in the growing area of Scots pine. The obtained analysis results will further be used to conduct dendrochronological studies of tree rings of Scots pine (Pinus sylvestris L.) in the tree stands of the Separated Subdivision of the National University of Life and Environmental Sciences of Ukraine “Boyarka Forest Research Station”

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Section: Introductionmentioning

confidence: 93%

Analysis of climate changes in the forest fund lands of Boyarka Forest Research Station

Romanenko¹,

Kovalevskii²

2022

Ukr. j. for. wood sci.

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“…Others are specific to the Pacific Northwest region of the United States and Canada. In the context of climate change, these areas may be reduced, as is the case for other native Californian species [ 63 ]; indeed, the range and survival of these trees are threatened by the effects of global warming in the state of California [ 31 , 64 , 65 , 66 , 67 , 68 , 69 ]. In addition, the increase in wildfires due to global warming is another threat that this species may have to cope with [ 70 , 71 ].…”

Section: Introductionmentioning

confidence: 99%

Bioclimatic Characterisation of Specific Native Californian Pinales and Their Future Suitability under Climate Change

González-Pérez

Álvarez-Esteban

Penas

et al. 2023

Plants

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Rising temperatures and changes in precipitation patterns under climate change scenarios are accelerating the depletion of soil moisture and increasing the risk of drought, disrupting the conditions that many plant species need to survive. This study aims to establish the bioclimatic characterisation, both qualitative and quantitative, of ten native Californian Pinales for the period 1980–2019, and to determine their habitat suitability by 2050. To achieve this, an exhaustive search of the Gbif database for records of ten conifer taxa was carried out. To conduct the bioclimatic characterisation of the studied taxa, we worked with the monthly values of average temperature and precipitation for the period 1980–2019 from 177 meteorological stations. Linear regressions was performed in order to compile the future evolution of California’s climate. Suitable areas and optimal areas were defined at the present time (1980–2019) and its future projection (2050). We applied Boolean logic and, in this investigation, the Conditional Logic Operator (CON) was used to determine the possible species presence (one) or absence (zero) for each of the 15 variables analysed. In general, most of the conifers studied here will experience a reduction in their habitat range in California by the year 2050 due to climate change, as well as the displacement of species towards optimal areas. Furthermore, the results have highlighted the applicability of bioclimatology to future conditions under climate change. This will aid conservation managers in implementing strategic measures to ameliorate the detrimental impacts of climate change, thereby ensuring the ecological integrity and sustainability of the affected conifer species.

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Tree-ring climate response of Jeffrey pine in the Cascade Creek Watershed, Northern California

Cited by 2 publications

References 46 publications

Analysis of climate changes in the forest fund lands of Boyarka Forest Research Station

Analysis of climate changes in the forest fund lands of Boyarka Forest Research Station

Bioclimatic Characterisation of Specific Native Californian Pinales and Their Future Suitability under Climate Change

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