bluuebunny/crossref_metadata_2025_split huggingface dataset:
Aligning citizen science and remote sensing phenology observations to characterize climate change impact on vegetation
Authors: Domingo-Marimon Cristina , Masó Joan , Prat Ester , Zabala Alaitz , Serral Ivette , Batalla Meritxell , Ninyerola Miquel , Cristóbal Jordi 
Published: July 2022

Abstract
Phenology observations are essential indicators to characterize the local effects of climate change. Citizen participation in the collection of phenological observations is a potential approach to provide data at both high temporal scale and fine grain resolution. Traditional observation practices of citizen science (CS), although precise at the species scale, are limited to few observations often closely located to an observer’s residence. These limitations hinder coverage of the great variability of vegetation phenology across biomes and improvement of the knowledge of vegetation changes due to climate change impacts. This study presents a new approach to overcome these limitations by improving CS guidance and feedback as well as expanding phenology report sites and observations across different habitats and periods to contribute to monitoring climate change. This approach includes: (a) a new methodology focused on harmonizing remote sensing phenology products with traditional CS phenology observations to direct volunteers to active phenology regions and, (b) a new protocol for citizen scientists providing tools to guide them to specific regions to identify, collect and share species phenological observations and their phenophases. This approach was successfully tested, implemented and evaluated in Catalonia with more than 5000 new phenologically interesting regions identified and more than 200 observations collected and Sentinel-2 derived phenometrics were demonstrated as of good quality.
Urbanization altered atmospheric humidity diurnally and seasonally through ecohydrological processes in five urban agglomerations in China
Authors: Huang Xiaolin , Jin Kailun , Chen Dongxu , Zheng Qingzhou , Hao Lu 
Published: July 2022

Abstract
The large-scale conversion of vegetated land to urban use leads to a significant reduction in evapotranspiration (ET) due to the lack of vegetation, which may aggravate urban dry island (UDI) effect. Analysis of diurnal and seasonal (e.g. growing season) variations in UDI can help us to better identify the role of ET in processes of UDI. We compared six-hourly weather observation data (1980–2017) from 140 paired urban-rural stations across a large climatic gradient in China to explore how near-surface atmospheric dryness changed both diurnally and seasonally, and its relationship with urbanization-associated ecohydrological processes. We showed that the difference in atmospheric dryness (i.e. UDI intensity) between urban and rural areas, as measured by specific humidity (Δq < 0), is more pronounced during the daytime and growing seasons. The nighttime urban wet island (UWI, Δq > 0) effect partially offset daily UDI effect, which has made the latter underestimated. Intensified nighttime urban heat island (UHI) reduced the diurnal temperature range (DTR) in cities and thus enhanced nighttime UWI effect from 2000 to 2010. However, after 2010, nighttime UWI effect weakened or disappeared, whereas nighttime UDI intensified in humid cities, resulting in a significant increase in daily UDI. Intensified UHI and UDI are often closely coupled (synchronous occurrence) through latent heat (LE) or ET processes, especially after 2010. Our results indicate that the conversion of vegetated lands to urban impervious surface, especially in humid regions, leads to the reduction in transportation during daytime and evaporation at night in urban cores, which alters the relationships between near-surface air temperature, atmospheric moisture, and ET. The present diurnal and seasonal variations in UDI were delineated in detail to explicate the patterns and interconnections of local urban climate and surface ecohydrological processes, which are critical for ecosystem services in urban landscape design.
Smectic layering: Landau theory for a complex-tensor order parameter
Authors: Paget Jack , Alberti Una , Mazza Marco G , Archer Andrew J , Shendruk Tyler N 
Published: July 2022

Abstract
Composed of microscopic layers that stack along one direction while maintaining fluid-like positional disorder within layers, smectics are excellent systems for exploring topology, defects and geometric memory in complex confining geometries. However, the coexistence of crystalline-like characteristics in one direction and fluid-like disorder within layers makes lamellar liquid crystals notoriously difficult to model—especially in the presence of defects and large distortions. Nematic properties of smectics can be comprehensively described by the

Q

̲

̲

-tensor; however, lamellar order can exist independent of nematic alignment. To capture the features of the smectic layering alone, we develop a phenomenological Landau theory for a complex-tensor order parameter

E

̲

̲

, which is capable of describing the local degree of lamellar ordering, layer displacement, and orientation of the layers. This theory accounts for both parallel and perpendicular elastic contributions. In addition to resolving the potential ambiguities inherent to complex scalar order parameter models, this model reduces to previously employed models of simple smectics, and opens new possibilities for numerical studies on smectics possessing many defects, within complex geometries and under extreme confinement.
The 5th Indonesian Society of Limnology (MLI) Congress and International Conference 2021
Authors: Setiawan F , Toruan R L , Subehi L , Rahmat A 
Published: July 2022

The 5th Indonesian Society of Limnology (MLI) Congress and International Conference 2021 is a biannual conference organized by the Indonesian Society of Limnology, with the theme is “Building synergies towards sustainable use of inland waters.” This year due to the COVID-19 pandemic, we hold the event virtually from 2nd to 3rd December. The objectives of this event are to (1) Connect, discuss, share and create a mutual network among communities from different backgrounds who are interested in inland waters ecosystem; (2) Disseminate science & technology and lessen the gap between scientific and common communities through fruitful discussion settings; (3) Underpin sustainable use and management of inland aquatic ecosystems.
There were four keynotes speakers, four invited speakers, and 66 general presenters in the conference sessions. In total, 116 participants were registered and joined the conference. The first keynote speaker was Prof. Dr. Gadis Sri Haryani from the Research Center for Limnology and Water Resources, National Research and Innovation Agency of the Republic of Indonesia (BRIN), Indonesia, who presented research about Migratory freshwater fish in Indonesia: Threats and conservation efforts. The second presenter was Dr. Robert Walsh from the Australian Water Life, Australia, who presented research about Discover the world of Micro-invertebrates. The third keynote speaker was Dr. Khamla Inkhavilay from the National University of Laos, Lao PDR, who presented Persistent Organic Pollutants in Wetland of Mekong Basin. The fourth speaker was Dr. Kwanraree Joy Sirikanchana from the Chulabhorn Research Institute, Thailand, who presented Microbial Source Tracking and Quantitative Microbial Risk Assessment for Sustainable Water Pollution Management.
In addition, the four invited speakers and 66 general presenters split into four rooms for parallel discussions which covered the latest research on inland water ecosystems, including; (1) Biotic resources, biodiversity, and conservation; (2) System Dynamic of inland waters; (3) Applied technology for the management and pollution control; (4) Modelling, system information, decision support tool, disaster risk reduction; (5) Management, policies, regulation, education, social, economy, and culture.
We highly appreciate the generous support from Research Centre for Limnology-BRIN (Indonesia), Australian Water Life (Australia), Chulabhorn Research Institute (Thailand), National University of Laos (Lao PDR), Southeast Asian Limnological Network (SEALnet), Advisory Board, Steering and Organizing committee and all presenters and participants.
List of Committees, Advisory Board, Steering Committee, Scientific Committee, Organizing Committee, Documentation, all photos are available in this pdf.
Migratory freshwater fish in Indonesia: Threats and conservation efforts
Authors: Haryani GS 
Published: July 2022

Abstract
The process of fish migration is one of the most important biological aspects of the life of certain fish species, including fish species that live in freshwaters. In Indonesia’s freshwaters, several types of fish migrate to fulfill parts of their life cycle, such as Anguilla spp., Tor spp., and Rasbora spp., which have economic and ecological values. Fish habitats and migration routes can be affected by many cause changes, including dam constructions, other infrastructure constructions, drainage of wetlands, and floodplain disconnection. Other threats to migratory freshwater fish are overfishing and pollution. In Indonesia, most migratory freshwater fish threats were obstructions to free-flowing rivers, such as dams, and the exploitation of adult fish that migrate for spawning. Some management approaches should conserve and sustain the use of migratory freshwater fish.
Condition of physical and chemical parameters of tropical eel genus Anguilla habitat in Citarik and Cicatih rivers in the Cimandiri watershed, Sukabumi, West Java
Authors: Wildan D M , Rahmadya A , Ridwansyah I , Daruati D , Triyanto  , Dewi A P , Fachri F R 
Published: July 2022

Abstract
Land changes around the Citarik and Citatih rivers will affect the water quality. These changes will affect eels’ life (Anguilla spp.) as fish that live in the area. This study aimed to determine water quality (physical and chemical) and the presence of eels (Anguilla spp.) in the Citarik and Citatih rivers in the Cimandiri watershed Sukabumi, West Java. This research was conducted from April to May 2021. Data collection was carried out in the upstream, middle, and downstream areas of the Citarik and Cicatih rivers. The results of this study show that the Ciratik river has a turbidity of 53.3-93.6 NTU, current 0.448-0.478 m/s, temperature 25.55-26.65 °C, TDS 0.002 0.041 mg/l. Eels caught amounted to 13 individuals of (Anguilla Marmorata); Cicatih river had a turbidity 84.4-264 NTU, current 0.142-0.814 m/s, temperature 26.76-29.05 °C, TDS 0.079-0.096 mg/l, and eels caught amounted to 12 individuals of (Anguilla Marmorata). Based on the results, environmental changes in the Citarik and Citatih rivers are still normal, as evidenced by the water quality that is still following the needs of the eels and the presence of eels.
Functional Groups of Phytoplankton and Their Relationship with Environmental Factors in Lake Maninjau, West Sumatra, Indonesia
Authors: Sulastri  , Nomosatryo S , Henny C , Sulawesty F 
Published: July 2022

Abstract
Lake Maninjau is a eutrophic lake indicated by the frequent occurrence of cyanobacterial blooms. The phytoplankton functional groups (FGs) reflect the environmental characteristics and can be useful to monitor the trophic state and evaluate lake’s environmental conditions. This study aims to perceive the composition of phytoplankton FGs and their relation to the environmental factors in Lake Maninjau. The data including phytoplankton and environmental factors were collected in 2001, 2005, 2009, 2014, 2015, 2016, and 2018. There were 21 FGs of phytoplankton recorded in Lake Maninjau. FGs of D, J, F, and NA were commonly found in this Lake. The phytoplankton FGs reflected the dynamic of the environmental characteristics of the lake. The FGs NA representative of oligo to mesotrophic habitat type were predominated accounting for 66.3% to 67.69 % in May 2005 with the lake’s conditions characterized by low TP concentration, high Secchi depth and TN: TP ratio. The FGs of M representative of eutrophic to hypereutrophic habitat type were predominated accounting for 74.14 % to 94.96 % in April 2018 with the lake’s conditions characterized by high TP concentration, low TN: TP ratio, and Secchi depth. A canonical correspondence analysis (CCA) showed that temperature, conductivity, and total phosphorus are important environmental factors to have influenced the succession of phytoplankton FGs in Lake Maninjau.
Zooplankter - water fleas Daphnia magna - respond to phosphorus enrichment in pond water
Authors: Tanjung L R , Chrismadha T , Sulawesty F , Nafisyah E 
Published: July 2022

Abstract
Phosphorus has been pointed out as one of the limiting factors that limit freshwater bio productivity, so controlling this element at an optimum level is crucial to enhance pond water bio productivity. This study evaluates the impact of phosphorus enrichment in the pond (small lake) water on the zooplankton population development. The clear pond water of Situ Cibuntu, located in Cibinong – West Java, was fertilized up to the level of eutrophic water of Limboto Lake, in Gorontalo Province, by addition of adequate level of phosphorus in aquaria placed in a greenhouse. The phytoplankton, as well as the zooplankton, was monitored twice a week for two weeks. Phytoplankton development was represented by the chlorophyll content in the water, while the water flea Daphnia magna was introduced to observe water carrying capacity in supporting zooplankton life. The result shows that the growth rate of total phytoplankton significantly increased in response to phosphorus enrichment, indicating phosphorus limitation, followed by the development of the daphnid population. The chlorophyll-a reached the maximum concentration of 15.22 mg/m3 on day-7 of the experiment, while the maximum daphnid population of 1,272 individuals was enhanced on day-10. This experiment emphasized the importance of phosphorus control in managing lake water bio productivity.
Benthic Macroinvertebrates of Five Small Lakes in Ciliwung Watershed and Estuary, Indonesia
Authors: Imroatushshoolikhah  , Dina R , Sari L , Aisyah S , Sudarso J , Wahyudewantoro G , Muit N 
Published: July 2022

Abstract
Small lakes are biodiversity hotspots of freshwater ecosystems, home for fauna including benthic macroinvertebrates fauna which play vital roles as it supports food sources for higher-level organisms such as fishes. This research aims to investigate the composition of benthic macroinvertebrates community in some small lakes located in the Ciliwung watershed that surrounds Bogor, Depok, and Jakarta. Samples were undertaken on April and June 2021 from four small lakes located at the Ciliwung watershed. They are Telaga Warna, Situ Cikaret, Cincin urban lake, and Sunter urban lake. Also includes an estuary urban lake ecosystem, Angke lake. A total of 22 taxa were found, which consist of Mollusks (55.44%), Insects (6.27%), and Annelids (38.29%). Mollusk was composed of six families of Gastropods and one family of Bivalves. Meanwhile, the family of Diptera was the only Insect group. The abundance ranges between 101-4471 Ind/m2. The pattern shows that Gastropods were the predominant group in the downstream area meanwhile Annelids were the most abundant groups in the upstream, middle, and estuary areas.
Freshwater Fish and Fishery Activities in Koto Panjang Reservoir, Riau
Authors: Muthmainnah D , Rais A H , Fatah K , Makri M 
Published: July 2022

Abstract
Koto Panjang Reservoir is an artificial lake that, besides being utilized for electricity power or irrigation, is also utilized by the fishery sector. This paper describes the fish diversity, fishery activities, and potential yield of Koto Panjang Reservoir in Riau Province. Eight enumerators collected the primary data to record the total weight (kg) of catches and the number of fishing gear (unit) usage. The secondary data was obtained by literature search and relevant study results from related agencies. The potential fish yield of the reservoir was estimated by using the Morpho-Edaphic Index (MEI) model. The results showed that 29 species inhabited in Koto Panjang Reservoir with the potential fish production of about 222.32 kg/ha/year. Policy implementation can be implemented by restricting fisher and fishing gears numbers.
Brief overview of allochtonous phosphorus load on cascade reservoirs in Citarum River Basin, West Java Indonesia
Authors: Lukman L , Kartamihardja ES , Hariyadi S , Sunardi  , Sumiarsa D 
Published: July 2022

Abstract
The Citarum River, Indonesia, has undergone degradation due to the pollutants, including phosphorus, that enters the river and the reservoirs of Saguling, Cirata, and Juanda (The official name of Jatiluhur Reservoir). The observations of total phosphorus (TP) load instantaneously had been carried out on the three reservoirs and TP measurements from 8 to 12 August 2019. The TP concentration in the inlets was generally very high (> 0.3 mg L-1), whereas the average TP concentration in Saguling, Cirata, and Juanda Reservoirs was 0.378 mg L-1, 0.343 mg L-1, and 0.324 mg L-1, respectively. Based on the trophic criteria, the condition of the waters in the three reservoirs was hypertrophic. Meanwhile, the average TP level in the Saguling showed the highest level compared to other reservoirs, which is in line with the TP concentration that enters the Saguling Reservoir, which is generally very high. Based on the instantaneous inputs, the loading TP to Saguling, Cirata, and Juanda Reservoirs were 26.471 g sec-1, 36.241 g sec-1, and 55.573 g sec-1, respectively. This indicates that the loading of phosphorus from upstream to downstream tends to increase.
Plastic Debris in Citarum River
Authors: Hariyadi S , Taryono  , Wulandari D Y , Zulmi R , Permatasari P A , Amalo L F , Nur I A , Trissanti V N , Hurley R , Braaten H F V , Olsen M 
Published: July 2022

Abstract
Plastic pollution in an aquatic ecosystem may negatively impact ecology, aquatic species, and causes economic damage. Rivers provide an excellent opportunity for intercepting plastic pollution before it reaches the ocean. The aim of this study is to identify and quantify the number of plastic debris in the Citarum River. Plastic debris was collected from April to August 2021 at three sampling sites based on the stream location, i.e. upstream, midstream, downstream, using a framed pocket net with 1cm-mesh size as a sampler with the dimension of 2x1x3 meter that was installed at two transversal locations of the river. Observation was conducted three times a day, morning, noon, and afternoon each with 15-30 minutes duration. The methods applied include plastic debris separation, enumeration, classification, volume estimation, and weighting. Type of plastics that are commonly found in high number of items are plastic bags, clear plastic bags, and plastic packaging. The highest volume of plastic debris was found in the upstream part of the Citarum River compared to midstream and downstream. The existing reservoirs act as a trap for plastic debris and all riverine debris of the Citarum River. The plastic debris tends to be higher in the morning than noon or afternoon.
Macroplastic abundance at Lake Singkarak riparian, West Sumatera
Authors: Rohaningsih D , Henny C , Suryono T , Santoso A B 
Published: July 2022

Abstract
Macroplastic waste has been spotted around the shoreline and the waters of Lake Singarak, West Sumatra. Macroplastic waste has been the main source of microplastic pollution in the marine and freshwater environment. This study aimed to determine the types and abundance of macroplastic waste in the riparian area of Lake Singkarak. Macropalstic waste collection was carried out using a 0.25 m2 square transect with a radius of 10 m at six sampling locations around the lake. The collected macroplastic waste was then sorted by its type and calculated to determine the abundance of each type. The six collection points, the most abundant macroplastic waste was at a hotel area (Sumpur) with a waste weight of 3.07 kg/m2, while the shoreline area (Batu Baraguang) with less human activity was the location with the lowest waste abundance of 0.53 kg/m2. The dominating types of macroplastic waste at Sumpur Hotel were plastic film (33%) and hard plastic-fragment (19%). Not only at Sumpur Hotel, the plastic film type also became the most dominant type of macroplastic waste observed in all sampling locations, except at the main river inlet area (Sumani) where the most dominant type found was styrofoam. Overall, there were four types of macroplastic waste that dominated in the riparian of Lake Singkarak, namely plastic film, food bag packaging, hard plastic fragments, also bottle and cup packaging. A high abundance of macropalstic waste in the riparian area could pose a risk of microplastic pollution in Lake Singkarak.
Evaluation of Heliconia psittacorum in a Horizontal Flow Constructed Wetland (HFCW) System for the Treatment of Textile Wastewater
Authors: Henny C , Rohaningsih D , Susanti E , Sumi F , Waluyo A 
Published: July 2022

Abstract
Constructed wetlands have promised sustainable treatment systems to remediate various industrial wastewaters, including textile. Textile wastewater contains a complex constituent of inorganic and organic pollutants such as dyes, toxic metals, surfactants, nutrients, and total dissolved solids. This preliminary study aims to evaluate the performance of Heliconia psittacorum in a horizontal subsurface flow constructed wetland (HFCW) system for the remediation of textile wastewater. An HFCW system was set in a tank with a volume of 2 m3 divided by three sections where each section filled with coarse gravel, fine gravel, and sand media respectively resulted in a bed volume of 0.322 m3. The top of media was added compost then planted with Heliconia psittacorum. Diluted textile wastewater with a concentration of 20% was fed to the system in a continuous horizontal flow with an HRT of 2.7 days. The performance of the HFCW system showed water quality improvement from the wastewater within 11 weeks of observation. DO increased from < 2 to around 4 mg/L, pH and conductivity increased considerably. High decrease in NH4 and TN concentrations in the effluent of the HFCW system were observed with fluctuated removal efficiency (RE). Maximum RE for ammonia, TN, TSS, and COD was > 80%. Although showing a decreasing pattern during observation, phosphorus was not effectively removed by Heliconia psittacorum in the studied HFCW system. Cleaner effluent was observed than much dirty and black colour of influent. Heliconia psittacorum grew well with increased shoot height and numbers of new plant seedlings. The long-term observation was needed for Heliconia psittacorum in the HFCW system to reach a steady state and to examine its potential to remediate textile wastewater.