Afifa Sehr afifasehr321@gmail.com University of Veterinary and Animal Sciences UVAS https://www.uvas.edu.pk https://ror.org/00g325k81 Qazi Adnan Ahmad qaziadnanahmad@cuvas.edu.pk 0000-0002-8446-8342 University of Veterinary and Animal Sciences UVAS https://www.uvas.edu.pk https://ror.org/00g325k81 2026 Sediment-to-tissue bioaccumulation factors and predator:detritivore concentration ratios for heavy metals at four Indus Basin barrages, Punjab, Pakistan dataset https://doi.org/10.1594/PANGAEA.997465 2026-09-18T10:34:03 This dataset reports sediment-to-tissue bioaccumulation factors (BAF) and predator:detritivore concentration ratios (PD) for copper, cadmium, iron, lead, and arsenic in liver and dorsal muscle, calculated separately for each tissue, at four barrages on the Indus Basin river system in Punjab, Pakistan - Head Sulemanki, Taunsa Barrage, Head Punjnad, and Head Islam - sampled on 27 June 2026. BAF is the species-mean tissue concentration (wet mass) divided by the total sediment concentration (dry weight) at the same site; because the two are on different weight bases, these are concentration ratios rather than dry-weight- or organic-carbon-normalised BSAFs. PD is the piscivore Wallago attu concentration divided by the benthic detritivore Cirrhinus mrigala concentration at the same site and tissue, and replaces the source thesis's "trophic transfer factor" terminology: no stable-isotope or diet data exist to validate a trophic-position-based transfer factor, so the ratio is reported as a species contrast rather than as evidence of biomagnification. With one pooled specimen per species per site, no confidence interval can be attached to any value. Arsenic-based BAF and PD values are provisional: sediment arsenic concentrations (0.09–0.54 µg/g) lie one to two orders of magnitude below typical Indus/crustal background, and this low denominator drives the unusually large arsenic ratios; these should be confirmed against the original AAS worksheet before further use. All values are derived from the companion sediment and fish-tissue datasets in this collection and are reported as static figures, not live formulas. This dataset is derived from "Heavy Metal Speciation in Riverbed Sediments and Trophic Transfer to Benthic Fish at Selected Barrages of Punjab", a thesis by Afifa Sehr (24-CUVAS-0082), Cholistan University of Veterinary and Animal Sciences, Bahawalpur, Pakistan (2026); original laboratory instrument files were not available for deposition. Afifa Sehr afifasehr321@gmail.com in prep. Heavy Metal Speciation in Riverbed Sediments and Trophic Transfer to Benthic Fish at Selected Barrages of Punjab thesis Cholistan University of Veterinary and Animal Sciences, Bahawalpur, Pakistan [24-CUVAS-0082] Melake Bealemlay Abebe 0000-0003-1661-6961 Endalew Salie Mulat Alamirew Tamagnu Sintie Temesegen Liku Muche 0000-0002-1292-0125 2023 Bioaccumulation and Biota-Sediment Accumulation Factor of Metals and Metalloids in Edible Fish: A Systematic Review in Ethiopian Surface Waters journal article Environmental Health Insights 17 https://doi.org/10.1177/11786302231159349 11786302231159349 Naz Saima Chatha Ahmad Manan Mustafa 0000-0002-8284-5896 Danabas Durali 0000-0002-8947-3749 Khan Muhammad Farhan Xu Youhou Zhu Peng 0000-0001-8973-8666 Shafique Laiba 0000-0003-3428-4155 2023 Bioaccumulation Pattern and Health Risk Assessment of Heavy Metals in Cirrhinus mrigala at Panjnad Headworks, Bahawalpur, Pakistan journal article Toxics 11(7) https://doi.org/10.3390/toxics11070596 596 Rind Khalid Hussain Aslam Sonia Memon Nazakat Hussain Raza Asif Saeed Muhammad Qamar Mushtaq Alia Ujan Javed Ahmed Habib Syed Fahad Al-Rejaie Salim S Mohany Mohamed 2025 Heavy Metal Concentrations in Water, Sediment, and Fish Species in Chashma Barrage, Indus River: A Comprehensive Health Risk Assessment journal article Biological Trace Element Research 203(4) https://doi.org/10.1007/s12011-024-04290-6 2226-2239 DeForest David K Brix Kevin V Adams William J 2007 Assessing metal bioaccumulation in aquatic environments: The inverse relationship between bioaccumulation factors, trophic transfer factors and exposure concentration journal article Aquatic Toxicology 84(2) https://doi.org/10.1016/j.aquatox.2007.02.022 236-246 70.85 73.88333333 29.35 30.7 71.9874999975 30.008333332499998 2026-06-27T00:00:00 2026-06-27T00:00:00 111.0 161.0 horizontal profile Chenab-Sutlej_River_Head_Punjnad 29.35 71.03333333 Punjab, Pakistan 111.0 2026-06-27T00:00:00 Sediment and fish samples were taken on this position/date. Coordinates converted (arc-minute precision, ~1.8 km). Elevation values are approximate. Indus_River_Taunsa_Barrage 30.7 70.85 Punjab, Pakistan 161.0 2026-06-27T00:00:00 Sediment and fish samples were taken on this position/date. Coordinates converted (arc-minute precision, ~1.8 km). Elevation values are approximate. Sutlej_River_Head_Islam 29.68333333 72.18333333 Punjab, Pakistan 138.0 2026-06-27T00:00:00 Sediment and fish samples were taken on this position/date. Coordinates converted (arc-minute precision, ~1.8 km). Elevation values are approximate. Sutlej_River_Head_Sulemanki 30.3 73.88333333 Punjab, Pakistan 155.0 2026-06-27T00:00:00 Sediment and fish samples were taken on this position/date. Coordinates converted (arc-minute precision, ~1.8 km). Elevation values are approximate. 96 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Notes: DERIVED (BAF = tissue mean / sediment total at same site; PD = W.attu/C.mrigala at same site+tissue). Static values computed from the sediment and fish-tissue datasets, not live formulas. No CI possible, n=1 pooled specimen per species per site. Arsenic BAF/PD values are provisional — driven by a very low sediment arsenic denominator (0.09–0.54 µg/g, 1–2 orders of magnitude below typical Indus/crustal background); confirm against the original AAS worksheet. 'BAF' here is unnormalised tissue/sediment, not TOC-normalised BSAF. Event label Event Qazi Adnan Ahmad qaziadnanahmad@cuvas.edu.pk 0000-0002-8446-8342 Event Latitude of event Latitude Qazi Adnan Ahmad qaziadnanahmad@cuvas.edu.pk 0000-0002-8446-8342 Latitude Longitude of event Longitude Qazi Adnan Ahmad qaziadnanahmad@cuvas.edu.pk 0000-0002-8446-8342 Longitude Date/Time of event Date/Time Qazi Adnan Ahmad qaziadnanahmad@cuvas.edu.pk 0000-0002-8446-8342 Date/Time Elevation of event Elevation m Qazi Adnan Ahmad qaziadnanahmad@cuvas.edu.pk 0000-0002-8446-8342 Elevation [m] District District Qazi Adnan Ahmad qaziadnanahmad@cuvas.edu.pk 0000-0002-8446-8342 District Tissue type Tissue type tissue Qazi Adnan Ahmad qaziadnanahmad@cuvas.edu.pk 0000-0002-8446-8342 Tissue type Bioaccumulation factor BAF Calculated Qazi Adnan Ahmad qaziadnanahmad@cuvas.edu.pk 0000-0002-8446-8342 Calculated: tissue mean Cu / sediment total Cu, same site BAF (Calculated: tissue mean Cu / ...) Bioaccumulation factor BAF Calculated Qazi Adnan Ahmad qaziadnanahmad@cuvas.edu.pk 0000-0002-8446-8342 Calculated: tissue mean Cd / sediment total Cd, same site BAF (Calculated: tissue mean Cd / ...) Bioaccumulation factor BAF Calculated Qazi Adnan Ahmad qaziadnanahmad@cuvas.edu.pk 0000-0002-8446-8342 Calculated: tissue mean Fe / sediment total Fe, same site BAF (Calculated: tissue mean Fe / ...) Bioaccumulation factor BAF Calculated Qazi Adnan Ahmad qaziadnanahmad@cuvas.edu.pk 0000-0002-8446-8342 Calculated: tissue mean Pb / sediment total Pb, same site BAF (Calculated: tissue mean Pb / ...) Bioaccumulation factor BAF Calculated Qazi Adnan Ahmad qaziadnanahmad@cuvas.edu.pk 0000-0002-8446-8342 Calculated: tissue mean As / sediment total As, same site - provisional, see dataset notes BAF (Calculated: tissue mean As / ...) Predator/Detrivore ratio Predator/Detrivore ratio Calculated Qazi Adnan Ahmad qaziadnanahmad@cuvas.edu.pk 0000-0002-8446-8342 Calculated: W. attu Cu / C. mrigala Cu, same site+tissue Predator/Detrivore (Calculated: W. attu Cu / C. m...) Predator/Detrivore ratio Predator/Detrivore ratio Calculated Qazi Adnan Ahmad qaziadnanahmad@cuvas.edu.pk 0000-0002-8446-8342 Calculated: W. attu Cd / C. mrigala Cd, same site+tissue Predator/Detrivore (Calculated: W. attu Cd / C. m...) Predator/Detrivore ratio Predator/Detrivore ratio Calculated Qazi Adnan Ahmad qaziadnanahmad@cuvas.edu.pk 0000-0002-8446-8342 Calculated: W. attu Fe / C. mrigala Fe, same site+tissue Predator/Detrivore (Calculated: W. attu Fe / C. m...) Predator/Detrivore ratio Predator/Detrivore ratio Calculated Qazi Adnan Ahmad qaziadnanahmad@cuvas.edu.pk 0000-0002-8446-8342 Calculated: W. attu Pb / C. mrigala Pb, same site+tissue Predator/Detrivore (Calculated: W. attu Pb / C. m...) Predator/Detrivore ratio Predator/Detrivore ratio Calculated Qazi Adnan Ahmad qaziadnanahmad@cuvas.edu.pk 0000-0002-8446-8342 Calculated: W. attu As / C. mrigala As, same site+tissue - provisional, see dataset notes Predator/Detrivore (Calculated: W. attu As / C. m...) CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels citable author117723 author119089 author119102 author119103 author119104 author119105 author119106 author119107 author119108 author119112 author119113 author119114 author119115 author119116 author119117 author119118 author119119 author119120 author119121 author119126 author119127 author119128 author119129 author119130 author119131 author119132 curlevel30 event3507916 event3507917 event3507918 event3507919 geocode1599 geocode1600 geocode1601 geocode8128 inst22989 journal1383 journal17319 journal17606 journal2186 license21 method50 param520938 param553400 param577564 param577565 pi117723 ref141729 ref141731 ref141734 ref141737 ref141738 term2663825 term44312 term78590 topotype4