scholarly journals Using social media to quantify spatial and temporal dynamics of nature-based recreational activities

2016 ◽  
Author(s):  
Francesca Mancini ◽  
George M. Coghill ◽  
David Lusseau
Keyword(s):  
Temporal Dynamics ◽  
Spatial And Temporal Patterns ◽  
National Scale ◽  
Great Opportunity ◽  
Spatial And Temporal Scales ◽  
Use Of Data ◽  
Spatial And Temporal Dynamics ◽  
Recent National Survey ◽  
Visitor Numbers

AbstractBig data offer a great opportunity for nature-based recreation (NbR) mapping and evaluation. However, it is important to determine when and how it is appropriate to use this resource. We used Scotland as a case study to validate the use of data from Flickr as an indicator of NbR on a national scale and at several regional spatial and temporal resolutions. We compared Flickr photographs to visitor statistics in the Cairngorms National Park (CNP) and determined whether temporal variability in photo counts could be explained by known annual estimates of CNP visitor numbers. We then used a unique recent national survey of nature recreation in Scotland to determine whether the spatial distribution of Flickr photos could be explained by known spatial variability in nature use. Following this validation work, we used Flickr data to identify hotspots of wildlife watching in Scotland and investigated how they changed between 2005 and 2015.We found that spatial and temporal patterns in Flickr count are explained by measures of visitation obtained through surveys and that this relationship is reliable down to a 10 Km scale resolution. Our findings have implications for planning and management of NbR as they suggest that photographs uploaded on Flickr reflect patterns of NbR at spatial and temporal scales that are relevant for ecosystem management.

scholarly journals Spatial and Temporal Patterns in Volunteer Data Contribution Activities: A Case Study of eBird

2020 ◽  
Vol 9 (10) ◽  
pp. 597
Author(s):  
Guiming Zhang
Keyword(s):  
Temporal Dynamics ◽  
Bird Species ◽  
Temporal Patterns ◽  
Volunteered Geographic Information ◽  
Geographic Information ◽  
Spatial And Temporal Patterns ◽  
Space And Time ◽  
Spatial And Temporal Dynamics ◽  
The World

Volunteered geographic information (VGI) has great potential to reveal spatial and temporal dynamics of geographic phenomena. However, a variety of potential biases in VGI are recognized, many of which root from volunteer data contribution activities. Examining patterns in volunteer data contribution activities helps understand the biases. Using eBird as a case study, this study investigates spatial and temporal patterns in data contribution activities of eBird contributors. eBird sampling efforts are biased in space and time. Most sampling efforts are concentrated in areas of denser populations and/or better accessibility, with the most intensively sampled areas being in proximity to big cities in developed regions of the world. Reported bird species are also spatially biased towards areas where more sampling efforts occur. Temporally, eBird sampling efforts and reported bird species are increasing over the years, with significant monthly fluctuations and notably more data reported on weekends. Such trends are driven by the expansion of eBird and characteristics of bird species and observers. The fitness of use of VGI should be assessed in the context of applications by examining spatial, temporal and other biases. Action may need to be taken to account for the biases so that robust inferences can be made from VGI observations.

scholarly journals Understanding Mosquito Surveillance Data for Analytic Efforts: A Case Study

2021 ◽  
Author(s):  
Heidi E Brown ◽  
Luigi Sedda ◽  
Chris Sumner ◽  
Elene Stefanakos ◽  
Irene Ruberto ◽  
...  
Keyword(s):  
Temporal Dynamics ◽  
National Level ◽  
Surveillance Data ◽  
Mosquito Vector ◽  
Vector Surveillance ◽  
Mosquito Surveillance ◽  
Spatial And Temporal Dynamics ◽  
Prediction And Forecasting

Abstract Mosquito surveillance data can be used for predicting mosquito distribution and dynamics as they relate to human disease. Often these data are collected by independent agencies and aggregated to state and national level portals to characterize broad spatial and temporal dynamics. These larger repositories may also share the data for use in mosquito and/or disease prediction and forecasting models. Assumed, but not always confirmed, is consistency of data across agencies. Subtle differences in reporting may be important for development and the eventual interpretation of predictive models. Using mosquito vector surveillance data from Arizona as a case study, we found differences among agencies in how trapping practices were reported. Inconsistencies in reporting may interfere with quantitative comparisons if the user has only cursory familiarity with mosquito surveillance data. Some inconsistencies can be overcome if they are explicit in the metadata while others may yield biased estimates if they are not changed in how data are recorded. Sharing of metadata and collaboration between modelers and vector control agencies is necessary for improving the quality of the estimations. Efforts to improve sharing, displaying, and comparing vector data from multiple agencies are underway, but existing data must be used with caution.

Spatial relationships and temporal variability in a littoral macrophyte fish assemblage

2004 ◽  
Vol 55 (6) ◽  
pp. 609 ◽  
Author(s):  
S. R. Balcombe ◽  
G. P. Closs
Keyword(s):  
Fish Assemblages ◽  
Temporal Dynamics ◽  
Juvenile Fish ◽  
Physical Structure ◽  
First Year ◽  
Small Fish ◽  
Spatial And Temporal Patterns ◽  
Emergent Macrophytes ◽  
Spatial And Temporal Dynamics ◽  
Fish Traps

The presence of macrophytes in lentic systems often exerts a large influence on the spatial and temporal dynamics of the small-bodied fish that inhabit them, particularly in the presence of piscivorous predators. To examine spatial and temporal patterns of fish abundance in macrophyte stands we sampled fish bimonthly with fine-meshed fish traps by day and night in giant rush habitats of a River Murray billabong between October 1995 and September 1996. Three native and three exotic species were found within these habitats during the study, however, catches were dominated by two species of native carp gudgeons (Hypseleotris spp.). Consistently higher numbers of gudgeons were trapped during the day than at night throughout the study period and there was a sustained decline in catch from spring in the first year to the following spring. The results suggest recruitment of juvenile fish spawned during the summer was insufficient for relative abundance to return to the high numbers found at the start of the study. Fine-scale distribution of carp gudgeons within emergent macrophytes was not generally explained by variability in either physical structure or physicochemical variability. This contrasts with many studies of small fish assemblages in macrophytes where piscivorous predators are present.

Modelling the potential impact of climate change on future spatial and temporal patterns of biological control agents:Peristenus digoneutis(Hymenoptera: Braconidae) as a case study

2016 ◽  
Vol 148 (5) ◽  
pp. 579-594 ◽  
Author(s):  
O. Olfert ◽  
T. Haye ◽  
R. Weiss ◽  
D. Kriticos ◽  
U. Kuhlmann
Keyword(s):  
Climate Change ◽  
Biological Control ◽  
Temporal Dynamics ◽  
Potential Range ◽  
Pest Species ◽  
Spatial And Temporal Patterns ◽  
Climate Suitability ◽  
Potential Impact ◽  
Spatio Temporal

AbstractMechanistic species niche models were used to map the seasonal spatio-temporal dynamics of biological control pressure. Future climate scenarios were applied to these models to identify potential future trends in the patterns of biological control pressure through space and time during an annual seasonal cycle.Peristenus digoneutisLoan (Hymenoptera: Braconidae) is a parasitoid ofLygusHahn (Hemiptera: Miridae) species, important pests of glasshouse and field crops throughout Europe and North America. Consistent with theoretical expectations, the modelled potential range ofP. digoneutisexpanded polewards and contracted from its southern temperature range limits. However, its distribution did not change consistently across continents or countries. Locations near the outer limits of the current modelled distribution were more sensitive to changes in future climates than locations near the central core. Weekly climate suitability and stress maps were developed to provide insight into seasonal adjustments that accompany changes in the potential range of pest species and their natural enemies. Climate change may increase the number ofLygusgenerations in western Canada allowingP. digoneutisto establish in areas, where biological control attempts had failed in the past.

Sign in / Sign up

Export Citation Format

Share Document